Search: 1000 results found for "Septin"

Description:

Septin-3 Human Recombinant

Septin 3, SEP3, Neuronal-Specific Septin 3, Neuronal-Specific Septin-3, BK250D10.3, Neuronal-specific septin-3.

Product # :

PRO-2152

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Description

SEPT3 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 381 amino acids (1-358 a.a) and having a molecular mass of 43.1kDa. SEPT3 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

SEPT3 protein solution (1mg/ml) containing Phosphate buffered saline (pH7.4), 10% glycerol and 1mM DTT.

Purity

Greater than 95% as determined by SDS-PAGE.

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Introduction
Septin-3, also known as SEPT3 is a member of the septin family of GTPases. Members of this family are essential for cytokinesis. Furthermore, expression is up regulated by retinoic acid in a human teratocarcinoma cell line. The exact role of SEPT3 has not been determined yet. In addition, among its related pathways are Bacterial invasion of epithelial cells.
Synonyms
Septin 3, SEP3, Neuronal-Specific Septin 3, Neuronal-Specific Septin-3, BK250D10.3, Neuronal-specific septin-3.
Physical Appearance
Sterile filtered colorless solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSMSKGLPE TRTDAAMSEL VPEPRPKPAV PMKPMSINSN LLGYIGIDTI IEQMRKKTMK TGFDFNIMVV GQSGLGKSTL VNTLFKSQVS RKASSWNREE KIPKTVEIKA IGHVIEEGGV KMKLTVIDTP GFGDQINNEN CWEPIEKYIN EQYEKFLKEE VNIARKKRIP DTRVHCCLYF ISPTGHSLRP LDLEFMKHLS KVVNIIPVIA KADTMTLEEK SEFKQRVRKE LEVNGIEFYP QKEFDEDLED KTENDKIRQE SMPFAVVGSD KEYQVNGKRV LGRKTPWGII EVENLNHCEF ALLRDFVIRT HLQDLKEVTH NIHYETYRAK RLNDNGGLPP GEGLLGTVLP PVPATPCPTA E.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Septin-2 Human Recombinant

Septin 2, DIFF6, NEDD5, hNedd5, Pnutl3, NEDD-5.

Product # :

PRO-255

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Description

SEPT2 Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 381 amino acids (1-361 a.a.) and having a molecular mass of 43.6kDa. SEPT2 is fused to a 20 amino acid His Tag at N-terminus and purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

SEPT2 solution (0.25mg/1ml) containing 20mM Tris-HCl buffer (pH8.0), 0.1M NaCl, 1mM DTT and 10% glycerol.

Purity

Greater than 90% as determined by SDS-PAGE.

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Introduction
SEPT2 is a GTPase which is mandatory for cytokinesis and related to exocytosis. Septin-2 protein is able to hetero-oligomerize with Septin6, 7 and in addition takes part in the organization of new growth in organisms. SEPT2 is associated with a Tau-based paired helical filament core and contributes to the creation of neurofibrillary tangle as integral constituents of paired helical filaments.
Synonyms
Septin 2, DIFF6, NEDD5, hNedd5, Pnutl3, NEDD-5.
Physical Appearance
Sterile filtered colorless solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MSKQQPTQFI NPETPGYVGF ANLPNQVHRK SVKKGFEFTL MVVGESGLGK STLINSLFLT DLYPERVISG AAEKIERTVQ IEASTVEIEE RGVKLRLTVV DTPGYGDAIN CRDCFKTIIS YIDEQFERYL HDESGLNRRH IIDNRVHCCF YFISPFGHGL KPLDVAFMKA IHNKVNIVPV IAKADTLTLK ERERLKKRIL DEIEEHNIKI YHLPDAESDE DEDFKEQTRL LKASIPFSVV GSNQLIEAKG KKVRGRLYPW GVVEVENPEH NDFLKLRTML ITHMQDLQEV TQDLHYENFR SERLKRGGRK VENEDMNKDQ ILLEKEAELR RMQEMIARMQ AQMQMQMQGG DGDGGALGHH V.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Septin-5 Human Recombinant

Septin 5, PNUTL1, H5, HCDCREL-1, CDCREL-1, cell division control related protein 1, Peanut-like protein 1 (Drosophila), platelet glycoprotein Ib beta chain.

Product # :

PRO-879

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Description

SEPT5 Human Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 392 amino acids (1-369) and having a molecular mass of 45.2 kDa.The SEPT5 is fused to a 23 amino acid His-Tag at N-terminus and purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

SEPT5 protein (0.25mg/ml) is supplied in 20mM Tris-HCL, pH-8, 0.3M NaCl, 1mM DTT and 40% Glycerol.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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Introduction
SEPT5 is a member of the septin gene family of nucleotide binding proteins which were initially defined in yeast as cell division cycle regulatory proteins. Septins are extremely conserved in yeast, Drosophila, and mouse and seem to regulate cytoskeletal organization. Interference of septin function disrupts cytokinesis and results in high multinucleate or polyploid cells.
Synonyms
Septin 5, PNUTL1, H5, HCDCREL-1, CDCREL-1, cell division control related protein 1, Peanut-like protein 1 (Drosophila), platelet glycoprotein Ib beta chain.
Physical Appearance
Sterile Filtered colorless solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSMSTGLRY KSKLATPEDK QDIDKQYVGF ATLPNQVHRK SVKKGFDFTL MVAGESGLGK STLVHSLFLT DLYKDRKLLS AEERISQTVE ILKHTVDIEE KGVKLKLTIV DTPGFGDAVN NTECWKPITD YVDQQFEQYF RDESGLNRKN IQDNRVHCCL YFISPFGHGL RPVDVGFMKA LHEKVNIVPL IAKADCLVPS EIRKLKERIR EEIDKFGIHV YQFPECDSDE DEDFKQQDRE LKESAPFAVI GSNTVVEAKG QRVRGRLYPW GIVEVENQAH CDFVKLRNML IRTHMHDLKD VTCDVHYENY RAHCIQQMTS KLTQDSRMES PIPILPLPTP DAETEKLIRM KDEELRRMQE MLQRMKQQMQ DQ

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Septin-6 Human Recombinant

Septin 6, Septin 2, SEP2, KIAA0128, SEPT2.

Product # :

PRO-949

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Description

SEPT6 Human Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 457 amino acids (1-434) and having a molecular mass of 52.1 kDa.SEPT6 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

E.coli.

Formulation

The SEPT6 solution (0.5mg/ml) contains 20mM Tris-HCl buffer (pH 8.0), 2mM DTT, 0.1M NaCl and 10% glycerol.

Purity

Greater than 90% as determined by SDS-PAGE.

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Introduction
SEPT6 is a member of the septin family of GTPases and is functionally involved in cytokinesis and conservation of cellular morphology. SEPT6 interact with SEPT2. The genes encoding the mixed-lineage leukemia and SEPT2 breakpoint proteins are associated with one type of pediatric acute myeloid leukemia which is caused by reciprocal translocation between chromosomes 11 and X.
Synonyms
Septin 6, Septin 2, SEP2, KIAA0128, SEPT2.
Physical Appearance
Sterile Filtered colorless solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSMAATDIA RQVGEGCRTV PLAGHVGFDS LPDQLVNKSV SQGFCFNILC VGETGLGKST LMDTLFNTKF EGEPATHTQP GVQLQSNTYD LQESNVRLKL TIVSTVGFGD QINKEDSYKP IVEFIDAQFE AYLQEELKIR RVLHTYHDSR IHVCLYFIAP TGHSLKSLDL VTMKKLDSKV NIIPIIAKAD AISKSELTKF KIKITSELVS NGVQIYQFPT DDESVAEING TMNAHLPFAV IGSTEELKIG NKMMRARQYP WGTVQVENEA HCDFVKLREM LIRVNMEDLR EQTHTRHYEL YRRCKLEEMG FKDTDPDSKP FSLQETYEAK RNEFLGELQK KEEEMRQMFV QRVKEKEAEL KEAEKELHEK FDRLKKLHQD EKKKLEDKKK SLDDEVNAFK QRKTAAELPQ SQGSQAGGSQ TLKRDKEKKN NPWLCTE

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Secernin 1 Human Recombinant

Secernin-1, SES1, KIAA0193, Secernin 1.

Product # :

PRO-2212

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Description

SCRN1 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 437 amino acids (1-414 a.a) and having a molecular mass of 48.8kDa. SCRN1 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

SCRN1 protein solution (0.5mg/ml) containing Phosphate buffered saline (pH7.4) , 10% glycerol and 1mM DTT.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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Introduction
Secernin 1 (SCRN1) which is a member of the peptidase C69 family, regulates exocytosis in mast cells. SCRN1 increases both the level of secretion and the sensitivity of mast cells to stimulation with calcium.
Synonyms
Secernin-1, SES1, KIAA0193, Secernin 1.
Physical Appearance
Sterile Filtered colorless solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
GSSHHHHHH SSGLVPRGSH MGSMAAAPPS YCFVAFPPRA KDGLVVFGKN SARPRDEVQE VVYFSAADHE PESKVECTYI SIDQVPRTYA IMISRPAWLW GAEMGANEHG VCIANEAINT REPAAEIEAL LGMDLVRLGL ERGETAKEAL DVIVSLLEEH GQGGNYFEDA NSCHSFQSAY LIVDRDEAWV LETIGKYWAA EKVTEGVRCI CSQLSLTTKM DAEHPELRSY AQSQGWWTGE GEFNFSEVFS PVEDHLDCGA GKDSLEKQEE SITVQTMMNT LRDKASGVCI DSEFFLTTAS GVSVLPQNRS SPCIHYFTGT PDPSRSIFKP FIFVDDVKLV PKTQSPCFGD DDPAKKEPRF QEKPDRRHEL YKAHEWARAI IESDQEQGRK LRSTMLELEK QGLEAMEEIL TSSEPLDPAE VGDLFYDCVD TEIKFFK.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Semaphorin 7A Human Recombinant

Semaphorin-7A, CDw108, JMH blood group antigen, John-Milton-Hargen human blood group Ag, Semaphorin-K1, Sema K1, Semaphorin-L, Sema L, CD108.

Product # :

PRO-2506

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Description

SEMA7A produced in Sf9 Insect cells is a single, glycosylated polypeptide chain containing 846 amino acids (45-648 a.a.) and having a molecular mass of 95.7kDa (Molecular size on SDS-PAGE will appear at approximately 70-100kDa).SEMA7A is expressed with an 242 amino acid hIgG-His tag at C-Terminus and purified by proprietary chromatographic techniques.

Source

Sf9, Insect cells.

Formulation

SEMA7A protein solution (0.25mg/ml) contains Phosphate Buffered Saline (pH 7.4) and 10% glycerol.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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Introduction
SEMA7A (semaphorin-7A isoform 1), is a membrane-bound semaphorin which is linked with cell surfaces via a glycosylphosphatidylinositol (GPI) linkage. SEMA7A encourages formation of focal adhesion complexes, activation of the protein kinase PTK2/FAK1 and subsequent phosphorylation of MAPK3 & MAPK1. SEMA7A takes a vital part in integrin-mediated signaling and functions in regulating cell migration as well as immune responses. In addition, SEMA7A promotes the production of proinflammatory cytokines by macrophages & monocytes.
Synonyms
Semaphorin-7A, CDw108, JMH blood group antigen, John-Milton-Hargen human blood group Ag, Semaphorin-K1, Sema K1, Semaphorin-L, Sema L, CD108.
Physical Appearance
Sterile filtered colorless solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
ADPQGHLRSG PRIFAVWKGH VGQDRVDFGQ TEPHTVLFHE PGSSSVWVGG RGKVYLFDFP EGKNASVRTV NIGSTKGSCL DKRDCENYIT LLERRSEGLL ACGTNARHPS CWNLVNGTVV PLGEMRGYAP FSPDENSLVL FEGDEVYSTI RKQEYNGKIP RFRRIRGESE LYTSDTVMQN PQFIKATIVH QDQAYDDKIY YFFREDNPDK NPEAPLNVSR VAQLCRGDQG GESSLSVSKW NTFLKAMLVC SDAATNKNFN RLQDVFLLPD PSGQWRDTRV YGVFSNPWNY SAVCVYSLGD IDKVFRTSSL KGYHSSLPNP RPGKCLPDQQ PIPTETFQVA DRHPEVAQRV EPMGPLKTPL FHSKYHYQKV AVHRMQASHG ETFHVLYLTT DRGTIHKVVE PGEQEHSFAF NIMEIQPFRR AAAIQTMSLD AERRKLYVSS QWEVSQVPLD LCEVYGGGCH GCLMSRDPYC GWDQGRCISI YSSERSVLQS INPAEPHKEC PNPKPDKAPL QKVSLAPNSR YYLSCPMESR HATYSWRHKE NVEQSCEPGH QSPNCILFIE NLTAQQYGHY FCEAQEGSYF REAQHWQLLP EDGIMAEHLL GHACALALEP KSCDKTHTCP PCPAPELLGG PSVFLFPPKP KDTLMISRTP EVTCVVVDVS HEDPEVKFNW YVDGVEVHNA KTKPREEQYN STYRVVSVLT VLHQDWLNGK EYKCKVSNKA LPAPIEKTIS KAKGQPREPQ VYTLPPSRDE LTKNQVSLTC LVKGFYPSDI AVEWESNGQP ENNYKTTPPV LDSDGSFFLY SKLTVDKSRW QQGNVFSCSV MHEALHNHYT QKSLSLSPGK HHHHHH.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Selenoprotein W 1 Human Recombinant

Selenoprotein W, 1, SelW, Selenoprotein W.

Product # :

PRO-2082

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Description

SEPW1 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 110 amino acids (1-87 a.a) and having a molecular mass of 11.8kDa. SEPW1 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

SEPW1 protein solution (0.25mg/ml) containing 20mM Tris-HCl buffer (pH 8.0), 0.15M NaCl, 20% glycerol and 1mM DTT.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
Selenoprotein W 1, also known as SEPW1 is a selenoprotein, which has a selenocysteine (Sec) residue at its active site. The selenocysteine is encoded through the UGA codon which normally signals translation termination. The 3' UTR of selenoprotein genes share a common stem-loop structure, the sec insertion sequence (SECIS), which is essential for the recognition of UGA as a Sec codon instead of as a stop signal. SEPW1 shows highest expression in skeletal muscle and heart, and also involved in oxidation-reduction reactions.
Synonyms
Selenoprotein W, 1, SelW, Selenoprotein W.
Physical Appearance
Sterile Filtered clear solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSMALAVRV VYCGACGYKS KYLQLKKKLE DEFPGRLDIC GEGTPQATGF FEVMVAGKLI HSKKKGDGYV DTESKFLKLV AAIKAALAQG.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

15 KDa Selenoprotein Human Recombinant

15 KDa Selenoprotein, SEP15.

Product # :

PRO-1468

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Description

SEP15 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 160 amino acids (29-165 a.a) and having a molecular mass of 17.7kDa.SEP15 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

SEP15 protein solution (0.5mg/ml) containing 20mM Tris-HCl buffer (pH 8.0), 0.15M NaCl, 10% glycerol and 1mM DTT.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
15 KDa Selenoprotein (SEP15) is a protein-coding gene which contains a selenocysteine (Sec) residue at its active site. Theselenocysteine is encoded by the UGA codon that usually signals translation termination. The 3' UTR ofselenoprotein genes have a conventional stem-loop structure, the sec insertion sequence (SECIS), which isnecessary for the recognition of UGA as a Sec codon rather than as a stop signal. Studies in mouse propose thatthis selenoprotein may have redox function and may be implicated in the quality control of protein folding. This geneis localized on chromosome 1p31, a genetic locus usually mutated or deleted in human cancers.Diseases associated with SEP15 include lung cancer susceptibility, and chronic lymphocytic leukemia.
Synonyms
15 KDa Selenoprotein, SEP15.
Physical Appearance
Sterile Filtered clear solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSVSAFGAE FSSEACRELG FSSNLLCSSC DLLGQFNLLQ LDPDCRGCCQ EEAQFETKKL YAGAILEVCG CKLGRFPQVQ AFVRSDKPKL FRGLQIKYVR GSDPVLKLLD DNGNIAEELS ILKWNTDSVE EFLSEKLERI

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

E-Selectin Human Recombinant, Sf9

E-selectin, Endothelial leukocyte adhesion molecule 1, ELAM-1, Leukocyte-endothelial cell adhesion molecule 2, LECAM2, CD62E antigen, SELE, ELAM1, ELAM, ESEL, CD62E

Product # :

PRO-2712

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biological activity
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Description

SELE Human Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 541 amino acids (22-556 a.a) and having a molecular mass of 59.4kDa.SELE is fused to a 6 amino acid His-tag at C-terminus & purified by proprietary chromatographic techniques.

Source

Sf9, Baculovirus cells.

Formulation

The SELE solution (0.5mg/1ml) contains Phosphate-Buffered Saline (pH 7.4) and 10% glycerol.

Purity

Greater than 95.0% as determined by SDS-PAGE.

Biological Activity

Measured by the ability of the immobilized protein to support the adhesion of U937 human histiocytic lymphoma cells, which are added to human E-Seletin/CD62E coated plates 2ug/ml. This effect is > 40%.

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Introduction
E-selectin (SELE) is a part of a family of divalent cation-dependent carbohydrate-binding glycoproteins or adhesion molecules. E-selectin is expressed on the surface of endothelial cells and mediates the interaction of leukocytes and platelets with endothelial cells during an inflammatory response. E-selectin is present in single copy in the human genome and contains 14 exons spanning about 13 kb of DNA.
Synonyms
E-selectin, Endothelial leukocyte adhesion molecule 1, ELAM-1, Leukocyte-endothelial cell adhesion molecule 2, LECAM2, CD62E antigen, SELE, ELAM1, ELAM, ESEL, CD62E
Physical Appearance
Sterile filtered colorless solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks.Store, frozen at -20°C for longer periods of time.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
WSYNTSTEAM TYDEASAYCQ QRYTHLVAIQ NKEEIEYLNS ILSYSPSYYW IGIRKVNNVW VWVGTQKPLT EEAKNWAPGE PNNRQKDEDC VEIYIKREKD VGMWNDERCS KKKLALCYTA ACTNTSCSGH GECVETINNY TCKCDPGFSG LKCEQIVNCT ALESPEHGSL VCSHPLGNFS YNSSCSISCD RGYLPSSMET MQCMSSGEWS APIPACNVVE CDAVTNPANG FVECFQNPGS FPWNTTCTFD CEEGFELMGA QSLQCTSSGN WDNEKPTCKA VTCRAVRQPQ NGSVRCSHSP AGEFTFKSSC NFTCEEGFML QGPAQVECTT QGQWTQQIPV CEAFQCTALS NPERGYMNCL PSASGSFRYG SSCEFSCEQG FVLKGSKRLQ CGPTGEWDNE KPTCEAVRCD AVHQPPKGLV RCAHSPIGEF TYKSSCAFSC EEGFELHGST QLECTSQGQW TEEVPSCQVV KCSSLAVPGK INMSCSGEPV FGTVCKFACP EGWTLNGSAA RTCGATGHWS GLLPTCEAPT ESNIPHHHHH H

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Secretin Human

Product # :

HOR-273

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Shipped at Room temp

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Description

Secretin has a molecular formula of C130H220N44O41, a.a. sequence of H-His-Ser-Asp-Gly-Thr-Phe-Thr-Ser-Glu-Leu-Ser-Arg-Leu-Arg- Asp-Ser-Ala-Arg-Leu-Gln-Arg-Leu-Leu-Gln-Gly-Leu-Val-NH2 and having an Mw of 3055.4 Dalton.

Formulation

The protein (1mg/ml) was lyophilized with no additives.

Purity

Greater than 98.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.

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Introduction
Human Secretin stimulates the secretion of bicarbonate by the pancreas and inhibits the production of gastrin and acid production in the stomach. It also potentiates the release of digestive enzymes from the pancreas triggered by cholecystokinin.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Secretin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Secretin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Secretin in sterile 18MΩ-cm H2O not less than 100 µg/ml, which can then be further diluted to other aqueous solutions.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Selenocysteinyl-tRNA(Sec) synthase Human Recombinant

SLA, SLA/LP autoantigen, SLA-p35, Selenocysteinyl-tRNA(Sec) synthase, Selenocysteine synthase, Liver-pancreas antigen, Soluble liver antigen, Sec synthase, UGA suppressor tRNA-associated protein.

Product # :

ENZ-033

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Description

SEPSECS produced in E.Coli is a single, non-glycosylated polypeptide chain containing 521 amino acids (1-501a.a.) and having a molecular mass of 57.9kDa.SEPSECS is fused to a 20 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The SEPSECS protein solution (0.5mg/1ml) is formulated in 20mM Tris-HCl buffer (pH8.0) 1mM DTT, 100mM NaCl and 10% glycerol.

Purity

Greater than 90% as determined by SDS-PAGE.

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Introduction
SEPSECS catalyzes the last step of sec synthesis by way of converting O-phosphoseryl-tRNA(sec) to selenocysteinyl-tRNA(sec) using selenophosphate as the selenium donor. Furthermore, SEPSECS protein is considered a specific marker of autoimmune hepatitis.
Synonyms
SLA, SLA/LP autoantigen, SLA-p35, Selenocysteinyl-tRNA(Sec) synthase, Selenocysteine synthase, Liver-pancreas antigen, Soluble liver antigen, Sec synthase, UGA suppressor tRNA-associated protein.
Physical Appearance
Sterile Filtered clear solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MNRESFAAGE RLVSPAYVRQ GCEARRSHEH LIRLLLEKGK CPENGWDEST LELFLHELAI MDSNNFLGNC GVGEREGRVA SALVARRHYR FIHGIGRSGD ISAVQPKAAG SSLLNKITNS LVLDIIKLAG VHTVANCFVV PMATGMSLTL CFLTLRHKRP KAKYIIWPRI DQKSCFKSMI TAGFEPVVIE NVLEGDELRT DLKAVEAKVQ ELGPDCILCI HSTTSCFAPR VPDRLEELAV ICANYDIPHI VNNAYGVQSS KCMHLIQQGA RVGRIDAFVQ SLDKNFMVPV GGAIIAGFND SFIQEISKMY PGRASASPSL DVLITLLSLG SNGYKKLLKE RKEMFSYLSN QIKKLSEAYN ERLLHTPHNP ISLAMTLKTL DEHRDKAVTQ LGSMLFTRQV SGARVVPLGS MQTVSGYTFR GFMSHTNNYP CAYLNAASAI GMKMQDVDLF IKRLDRCLKA VRKERSKESD DNYDKTEDVD IEEMALKLDN VLLDTYQDAS S.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Super Leptin Antagonist Ovine Recombinant

Product # :

CYT-1245

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
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Description

Super Leptin Antagonist Ovine Recombinant is a single polypeptide chain containing 146 amino acids, an additional Ala at N-terminus acids and having a molecular mass of ~ 16 kDa. Super Ovine Leptin Antagonist was mutated, resulting in D23L/L39A/D40A/F41A that was purified by proprietary chromatographic techniques.

Source

Escherichia coli.

Formulation

The protein was lyophilized from a concentrated (1mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 98.0% as determined by:

(a) Gel filtration analysis.

(b) Analysis by SDS-PAGE.

Biological Activity

ProSpec’s super Ovine leptin antagonist is capable of inhibiting leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Super Ovine leptin antagonist also inhibits various leptin effects in several in vitro bioassays.

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Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Super Leptin Antagonist although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution of super Ovine leptin antagonist at > 0.1 mg/ml and up to 2 mg/ml and filter sterilization super Ovine leptin antagonist can be stored at 4C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Super Leptin Antagonist in sterile water or sterile 0.4% NaHCO3 adjusted to pH 10, not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Val-Pro-Ile-Arg.
Background
Leptin is a hormone which mainly produced by adipocytes. Leptin’s main part is to regulate long-term energy balance. Leptin is encoded by the LEP gene. Leptin receptors are expressed by various brain and peripheral cell types. leptin levels influence satiety, appetite and triggers behaviours which save energy. When leptin levels are high, the brain interprets that energy reserves are high, whereas low leptin levels means that energy reserves are low, in the process adapting the organism to starvation through a variety of metabolic, neurobiochemical, endocrine and behavioral change.
Protein content
Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.2 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Antagonist Triple Mutant Pegylated Rat Recombinant

Product # :

CYT-567

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
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Description

Leptin Antagonist Triple Mutant Rat Recombinant is a single non-glycosilated polypeptide chain containing 146 amino and additional Ala at N-terminus acids and having a molecular mass of ~ 16 kDa.The Rat Leptin antagonist was mutated, resulting in L39A/D40A/F41A mutant.The Rat Leptin antagonist is bound to 20 kDa mono-PEG at N-terminus, resulting in 35.6 kDa. The Rat Leptin triple anatagonist runs as a 48 kDa.Leptin Antagonist Triple Mutant Rat Recombinant was purified by proprietary chromatographic techniques.

Source

Escherichia coli.

Formulation

The Rat Leptin triple anatagonist was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 99.0% as determined by:
(a) Gel filtration analysis.
(b) Analysis by SDS-PAGE.

Biological Activity

Leptin Antagonist Triple Mutant Rat Recombinant half-life in circulation after SC injection was over 20 hours.
Leptin Antagonist Triple Mutant Rat Recombinant is capable of inhibiting leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Leptin Antagonist Triple Mutant Rat Recombinant in vitro activity is 5-6 fold lower than the non-pegylated antagonist, though in vivo it has profound weight gain effect (as compared to the non-pegylated antagonist), resulting mainly from increased food intake.

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Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Leptin Antagonist Triple Mutant Rat Recombinant although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 Leptin mutant mg/ml and up to 2 mM and filter sterilization LEP mutant can be stored at 4°C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested.Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin Antagonist Triple Mutant Rat Recombinant in sterile water or sterile 0.4% NaHCO3 adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted with other aqueous solutions.
Protein content
Protein quantization was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.2 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Ovine Recombinant, MTS tag

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-531

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
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Description

Leptin Ovine MTS tagged Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 157 amino acids and having a molecular mass of 17.5 kDa.The Leptin is purified by proprietary chromatographic techniques. The membrane translocating sequence Tag is composed of 10 amino acids Val-Leu-Leu-Pro-Val-Leu-Leu-Ala-Ala-Pro located at the N-terminus.

Source

Escherichia Coli.

Formulation

The protein was lyophilized from a concentrated (1mg/ml) solution with 0.02% NaHCO3.

Purity

Greater than 98.0% as determined by:
(a) Gel filtration analysis.
(b) Analysis by SDS-PAGE.

Biological Activity

Biological active as evidenced by inducing proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor.

More Info

Introduction
A 16-kDa peptide hormone secreted from white adipocytes and implicated in the regulation of food intake and energy balance. Leptin provides the key afferent signal from fat cells in the feedback system that controls body fat stores.
Synonyms
OB Protein, Obesity Protein, OBS, Obesity factor.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Leptin Ovine MTS tagged although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leptin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin in sterile 0.02% NaHCO3 not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Val-Leu-Leu-Pro.
Protein content
Protein quantization was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.18 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Ovine Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-239

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
More Info

Description

Leptin Ovine Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 146 amino acids and having a molecular mass of 16 kDa.The Leptin is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The protein was lyophilized from a concentrated (1mg/ml) solution with 0.0045mM NaHCO3.

Purity

Greater than 95.0% as determined by:
(a) Analysis by SEC-HPLC.
(b) Analysis by SDS-PAGE.

Biological Activity

Biological active as evidenced by inducing proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor.

More Info

Introduction
A 16-kDa peptide hormone secreted from white adipocytes and implicated in the regulation of food intake and energy balance. Leptin provides the key afferent signal from fat cells in the feedback system that controls body fat stores.
Synonyms
OB Protein, Obesity Protein, OBS, Obesity factor.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Leptin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leptin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Val-Pro-Ile-Arg.
Protein content
Protein quantitation was carried out by two independent methods1. UV spectroscopy at 280 nm using the absorbency value of 0.2 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). 2. Analysis by RP-HPLC,using calibrated solution of Leptin Ovine as a Reference Standard.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Quadruple Antagonist Pegylated Ovine Recombinant

Product # :

CYT-1246

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
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Description

Leptin Antagonist Quadruple Mutant Ovine Recombinant is a single non-glycosilated polypeptide chain containing 146 amino acids and additional Ala at N-terminus. The Ovine Leptin antagonist was mutated, resulting in D23L/L39A/D40A/F41A mutant. The Ovine Leptin antagonist is bound to 20 kDa mono-PEG at N-terminus, resulting in 35.6 kDa. The Ovine Leptin Quadruple anatagonist Pegylated runs as a 48 kDa due to enlarged hydrodymanic volume. Leptin Antagonist Quadruple Mutant Ovine Recombinant was purified by proprietary chromatographic techniques.

Source

Escherichia coli.

Formulation

The Ovine Leptin Quadruple anatagonist was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 95.0% as determined by:

(a) Gel filtration analysis.

(b) Analysis by SDS-PAGE.

Biological Activity

Pegylated Ovine Leptin Quadruple Antagonist inhibits leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Pegylated recombinant Ovine leptin antagonist in vitro activity is 6-8 fold lower than the non-pegylated recombinant super Ovine leptin antagonist but is 15 fold higher as compared to pegylated recombinant super active ovine leptin antagonist.

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Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Leptin Antagonist Quadruple Mutant Ovine Recombinant although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 mg/ml and up to 2mM and filter sterilization LEP mutant can be stored at 4°C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin Antagonist Quadruple Mutant Ovine Recombinant in sterile water or sterile 0.4% NaHCO3adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted with other aqueous solutions.
Background
Leptin is mainly produced by adipocytes. Leptin’s main part is to regulate long-term energy balance. Leptin is encoded by the LEP gene. Leptin effects mostly on leptin receptors in the cell mambrane of various cells in the human body. The leptin receptor can be found on a various cell types. The leptin receptor is a single-transmembrane-domain type 1 cytokine receptor. leptin levels influence satiety, appetite and triggers behaviours which save energy. High leptin levels are interpreted by the brain that energy reserves are high, whereas low leptin levels means that energy reserves are low, in the process adapting the organism to starvation through a variety of metabolic, neurobiochemical, endocrine and behavioral change.
Protein content
Protein quantization was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.2 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Antagonist Triple Mutant Ovine Recombinant

Product # :

CYT-356

Price :

Quantity :

Shipping Method :

Shipped at Room temp

More Info

description
source
formulation
purity
biological activity
More Info

Description

Leptin Antagonist Triple Mutant Ovine Recombinant is a single non-glycosilated polypeptide chain containing 146 amino and additional Ala at N-terminus acids and having a molecular mass of ~ 16 kDa, Leptin was mutated, resulting in L39A/D40A/F41A mutant. Leptin Antagonist Triple Mutant Ovine Recombinant was purified by proprietary chromatographic techniques.

Source

Escherichia coli.

Formulation

The protein was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 98.0% as determined by:
(a) Gel filtration analysis.
(b) Analysis by SDS-PAGE.

Biological Activity

ProSpec’s Leptin-Antagonist Triple Mutant Ovine Recombinant is capable of inhibiting leptin-induced proliferation of BAF/3 cells stably transfected with the long form of mouse leptin receptor. It also inhibits various leptin effects in several in vitro bioassays.

More Info

Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Leptin Antagonist Triple Mutant Ovine Recombinant although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 Lep-tA mutant mg/ml and up to 2 mM and filter sterilization Leptin mutant can be stored at 4°C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin-Antagonist Triple Mutant Ovine Recombinant in sterile water or sterile 0.4% NaHCO3 adjusted to pH 8, not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Val-Pro-Ile-Arg.
Protein content
Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.21 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Pegylated Rat Leptin Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-592

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
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Description

Mono-Pegylated Leptin Rat Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 146 amino acids and an additional Ala at N-terminus having a molecular mass of 35.6 kDa (with 20 kDa PEG) as determined by mass spectometry. However due to enlarged hydrodymanic volume it runs on the SDS-PAGE as 48 kDa protein and in gel-filtration on Superdex 200 as over 100 kDa protein. Its half-life in circulation after SC injection was over 20 hours. Rat Leptin was purified by proprietary chromatographic techniques according to Salomon et al (2006) Protein Expression and Purification 47, 128–136 and then pegylated.

Source

Escherichia Coli.

Formulation

The protein was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 99.0% as determined by:
(a) Analysis by Gel-Filtration.
(b) Analysis by SDS-PAGE.

Biological Activity

Pegylated Rat Leptin is capable of stimulatng proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Its in vitro activity is only slightly lower than the non-pegylated antagonist but in vivo it has profound weight reducing effect (as compared to the non-pegylated leptin), resulting mainly from reduced food intake.

More Info

Introduction
A 16-kDa peptide hormone secreted from white adipocytes and implicated in the regulation of food intake and energy balance. Leptin provides the key afferent signal from fat cells in the feedback system that controls body fat stores.
Synonyms
OB Protein, Obesity Protein, OBS, Obesity factor.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized pegylated Rat Leptin Antagonist although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution of pegylated Rat Leptin at > 0.1 mg/ml and up to 2 mg/ml and filter sterilization Rat leptin can be stored at 4C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized pegylated Rat Leptin in sterile water or in sterile 0.4% NaHCO3 adjusted to pH-8.5, not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Pufferfish Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-530

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
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Description

Leptin Pufferfish (Takifugu rubripes) Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain having a molecular mass of 16 kDa. Bioactive Leptin Pufferfish (Takifugu rubripes) Recombinant was prepared according to the sequence published by Kurokawa et al. (2005)Peptides 26, 745-750 in two forms: monomer and covalent dimer. MS analysis revealed molecular masses of 15,291 and 30,585 Da, close to the theoretical values of 15,270 and 30,540 Da. CD spectra revealed high similarity to mammalian leptins. Other details of its preparation will be soon published by Yacobovitz et al (in press), General and Comparative Endocrinology.The Pufferfish Leptin is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The Pufferfish Leptin was lyophilized from a concentrated (0.85mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 99.0% as determined by:
(a) Analysis by SEC-HPLC.
(b) Analysis by SDS-PAGE.

Biological Activity

Biological active as evidenced by inducing proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. The affinity of human leptin receptors is considerably lower campared to mammalian leptins.

More Info

Introduction
A 16-kDa peptide hormone secreted from white adipocytes and implicated in the regulation of food intake and energy balance. Leptin provides the key afferent signal from fat cells in the feedback system that controls body fat stores.
Synonyms
OB Protein, Obesity Protein, OBS, Obesity factor.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Pufferfish Leptin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leptin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Pufferfish Leptin in sterile 0.4% NaHCO3 pH-9 not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
ALPGALDAMDVEKMKSKVTWKAQGLVARIDKHFPDRGLRFDTDKVE
GSTSVVASLESYNNLISDRFGGVSQIKTEISSLAGYLNHWREGNCQE
QQPKVWPRRNIFNHTVSLEALMRVREFLKLLQKNVDLLERC
Protein content
Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 1.28 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Quadruple Antagonist, Pegylated Rat Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-1241

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
More Info

Description

Leptin Pegylated Quadruple Antagonist Rat Recombinant is a single non-glycosilated polypeptide chain containing 146 amino and additional Ala at N-terminus acids. The Rat Leptin antagonist is bound to 20 kDa mono-PEG at N-terminus, resulting in 35.6 kDa. The Rat Leptin Pegylated Quadruple Antagonist was mutated, resulting in D23L/L39A/D40A/F41A that was purified by proprietary chromatographic techniques.

Source

Escherichia coli.

Formulation

The Rat Leptin Pegylated Quadruple Antagonist was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 98.0% as determined by:

(a) Gel filtration analysis.

(b) Analysis by SDS-PAGE.

Biological Activity

Rat Leptin Pegylated Quadruple Antagonist inhibits leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Its in vitro.

More Info

Synonyms
OB Protein, Obesity Protein, OBS, Obesity factor.
Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Rat Leptin Pegylated Quadruple Antagonist although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 and up to 2mM of rat pegylated leptin antagonist and filter sterilization rat pegylated leptin antagonist can be stored at 4°C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Rat Leptin Pegylated Quadruple Antagonist in sterile water or sterile 0.4% NaHCO3adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted with other aqueous solutions.
Background
Leptin is a hormone which mainly produced by adipocytes. Leptin’s main part is to regulate long-term energy balance. Leptin is encoded by the LEP gene. Leptin receptors are expressed by various brain and peripheral cell types. leptin levels influence satiety, appetite and triggers behaviors which lead to energy savings. High leptin levels are interpreted by the brain that energy reserves are high, whereas low leptin levels means that energy reserves are low, in the process adapting the organism to starvation through a variety of metabolic, neurobiochemical, endocrine and behavioral change.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Quadruple Antagonist Pegylated Human Recombinant

Product # :

CYT-1251

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
More Info

Description

Leptin Pegylated Quadruple Antagonist Human Recombinant is a single non-glycosilated polypeptide chain containing 146 amino and an additional Ala at N-terminus acids. The Human Leptin antagonist is bound to 20 kDa mono-PEG at N-terminus, resulting in 35.6 kDa. The Human Leptin Pegylated Quadruple Antagonist was mutated, resulting in D23L/L39A/D40A/F41A that was purified by proprietary chromatographic techniques.

Source

Escherichia coli.

Formulation

The Human Leptin Pegylated Quadruple Antagonist was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 98.0% as determined by:

(a) Gel filtration analysis.

(b) Analysis by SDS-PAGE.

Biological Activity

Human Leptin Pegylated Quadruple Antagonist inhibits leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Its in vitro activity is 6-8 fold lower than the non-pegylated human leptin antagonist but in vivo it has profound weight gain effect (as compared to the non-pegylated human leptin antagonist), resulting mainly from increased food intake. The in vivo activity of human pegylated super leptin antagonist was compared to that of human pegylated leptin antagonist is 9-27 fold higher.

More Info

Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Human Leptin Pegylated Quadruple Antagonist although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 and up to 2mM of Human pegylated leptin antagonist and filter sterilization Human pegylated leptin antagonist can be stored at 4°C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Human Leptin Pegylated Quadruple Antagonist in sterile water or sterile 0.4% NaHCO3 adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted with other aqueous solutions.
Background
Leptin is a~16 kDa protein which is encoded by the obese gene. Leptin is a hormone which participates in regulating body weight, reproductive function and metabolism. leptin is expressed predominantly by adipocytes, which supports the idea that body weight is sensed as the total mass of fat in the body. Smaller amounts of leptin are also secreted by cellsin the epithelium of the stomach and in the placenta. Leptin receptors are highly expressed in areas of the hypothalamus which regulates body weight, as well as in T lymphocytes and vascular endothelial cells.
Protein content
Protein quantization was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.88 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Antagonist Triple Mutant Human Recombinant, Pegylated

Product # :

CYT-702

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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source
formulation
purity
biological activity
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Description

Pegylated Leptin Antagonist Triple Mutant Human Recombinant is a single non-glycosilated polypeptide chain containing 146 amino and additional Ala at N-terminus acids and having a molecular weight of 35.6kDa, Leptin was mutated, resulting in L39A/D40A/F41A. However due to enlarged hydrodymanic volume it runs on the SDS-PAGE as 48 kDa protein and in gel-filtration on Superdex 200 as over 200 kDa protein. Leptin Antagonist Triple Mutant Human Recombinant is Mono-Pegylated with 20kDa PEG and was purified by proprietary chromatographic techniques.

Source

Escherichia coli.

Formulation

The protein was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

Purity

Greater than 98.0% as determined by:
(a) Gel filtration analysis.
(b) Analysis by SDS-PAGE.

Biological Activity

Capable of inhibiting leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Its in vitro activity is 6-8 fold lower than the non-pegylated antagonist but in vivo it has profound weight gain effect (as compared to the non-pegylated antagonist), resulting mainly from increased food intake. Its in vivo activity compared to that of PEG-MLA is 9-27 fold higher.

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Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized PEG-SHLA although stable at room temperature for several weeks, should be stored desiccated below - 20C. Upon reconstitution at > 0.1 mg/ml and up to 2 mg/ml of PEG-SHLA and filter sterilization mLEP mutant can be stored at 4C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin Antagonist Triple Mutant pegylated Human Recombinant in sterile 0.4% NaHCO3 adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Protein content
Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.88 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin Horse Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-504

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
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Description

Leptin Horse Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 146 amino acids and having a molecular mass of 16 kDa.The Leptin is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The protein was lyophilized from a concentrated (1mg/ml) solution with 0.0045mM NaHCO3.

Purity

Greater than 95.0% as determined by:
(a) Analysis by SEC-HPLC.
(b) Analysis by SDS-PAGE.

Biological Activity

Biological active as evidenced by inducing proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor.

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Introduction
A 16-kDa peptide hormone secreted from white adipocytes and implicated in the regulation of food intake and energy balance. Leptin provides the key afferent signal from fat cells in the feedback system that controls body fat stores.
Synonyms
OB Protein, Obesity Protein, OBS, Obesity factor.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Leptin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leptin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Val-Pro-Ile-Gln.
Protein content
Protein quantitation was carried out by two independent methods1. UV spectroscopy at 280 nm using the absorbency value of 0.1 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). 2. Analysis by RP-HPLC,using calibrated solution of Leptin Horse as a Reference Standard.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Description:

Leptin N82K Human Recombinant, Pegylated

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-1107

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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description
source
formulation
purity
biological activity
More Info

Description

Pegylated Leptin N82K Human Recombinant produced in E.Coli is a single non-glycosilated polypeptide chain containing 146 amino acids, an additional Ala at N-terminus and one molecule of PEG 20 kDa at its N-terminus acids and having a molecular weight of 35.6kDa. However due to enlarged hydrodymanic volume it runs on the SDS-PAGE as 48 kDa protein and in gel-filtration on Superdex 200 as over 200 kDa protein. Pegylated Leptin N82K Human Recombinant was purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

Lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3 Having 35-40% protein.

Purity

Greater than 99.0% as determined by:
(a) Gel filtration analysis.
(b) Analysis by SDS-PAGE.

Biological Activity

Pegylated Leptin Human is capable of stimulatng proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Pegylated Leptin in vitro activity is 5-7 fold lower than the non-pegylated recombinant human leptin but in vivo Pegylated Leptin has profound weight reducing effect (as compared to the non-pegylated recombinant human leptin), resulting mainly from reduced food intake.

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Introduction
Leptin takes an important part in the regulation of energy balance and body weight control.After entering the circulation, Leptin binds LEPRwhich results in the activation of several major signalling pathways. In the hypothalamus Leptin acts as an appetite-regulating factor that induces a decrease in food intake and an increase in energy consumption and also regulates bone mass and secretion of hypothalamo-pituitary-adrenal hormones. In the periphery, increases basal metabolism, regulates pancreatic beta-cell function and insulin secretion and affects innate and adaptive immunity.
Synonyms
OB Protein, Obesity Protein, OBS, Obesity factor.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Pegylated Leptin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Pegylated Leptin N82K should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Pegylated Leptin in sterile water or 0.4% NaHCO3 adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

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