LGALS8 Human, His

LGALS8 Human, His

Galectin

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  • Name :

    LGALS8 Human, His

    Description:

    Galectin-8 Human Recombinant, His Tag

    Gal-8, PCTA1, Po66-CBP, Prostate carcinoma tumor antigen 1.

    Product # :

    CYT-727

    Price :

    Quantity :

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    Ice Icon

    Shipped with Ice Packs

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  • description
  • source
  • formulation
  • purity
  • biological activity
  • More Info
  • SDS-PAGE

Description

LGALS8 Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 337 amino acids (1-317 a.a.) and having a molecular mass of 37.9 kDa. The LGALS8 is fused to a 20 amino acid His-Tag at N-terminus and purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The Galectin-8 His tag 0.5mg/ml protein solution contains 20mM Tris-HCl pH-8, 0.1M NaCl, 10% glycerol & 1mM DTT.

Purity

Greater than 90.0% as determined by SDS-PAGE.

Biological Activity

The ED50 for this effect is 5–10ug/ml. Measured by its ability to agglutinate human red blood cells corresponding to a specific activity of 100-200IU/mg.

SDS-PAGE

More Info

  • Introduction

    LGALS8 is a prostate-specific antigen that is solely overexpressed in malignant tumors and thus is a supplementary specific identifier of malignancies. LGALS8 is part of the galectin gene family which facilitates both cell-cell and cell matrix interactions in a method parallel to the selectin subgroup of C-type lectins.

  • Synonyms

    Gal-8, PCTA1, Po66-CBP, Prostate carcinoma tumor antigen 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

    MGSSHHHHHH SSGLVPRGSH MMLSLNNLQN IIYNPVIPFV GTIPDQLDPG TLIVIRGHVP SDADRFQVDL QNGSSMKPRA DVAFHFNPRF
    KRAGCIVCNT LINEKWGREE ITYDTPFKRE KSFEIVIMVL KDKFQVAVNG KHTLLYGHRI GPEKIDTLGI YGKVNIHSIG FSFSSDLQST
    QASSLELTEI SRENVPKSGT PQLRLPFAAR LNTPMGPGRT VVVKGEVNAN AKSFNVDLLA GKSKDIALHL NPRLNIKAFV RNSFLQESWG
    EEERNITSFP FSPGMYFEMI IYCDVREFKV AVNGVHSLEY KHRFKELSSI DTLEINGDIH LLEVRSW.

  • Background

    What is the molecular weight/Mw of LGALS8 HUMAN, HIS Protein?
    LGALS8 HUMAN, HIS Protein has a total Mw of 37.9kDa.

    What is the source or expression system of LGALS8 HUMAN, HIS Protein?
    Escherichia Coli.

    What is the Purity of LGALS8 HUMAN, HIS Protein?
    LGALS8 HUMAN, HIS Protein is >90% pure as determined by SDS-PAGE.

    What is the Biological Activity of LGALS8 HUMAN, HIS Protein?
    The ED50 for this effect is 5–10ug/ml. Measured by its ability to agglutinate human red blood cells corresponding to a specific activity of 100-200IU/mg.What is the amino acid
    sequence of LGALS8 HUMAN, HIS Protein?
    MGSSHHHHHH SSGLVPRGSH MMLSLNNLQN IIYNPVIPFV GTIPDQLDPG TLIVIRGHVP SDADRFQVDL QNGSSMKPRA DVAFHFNPRF
    KRAGCIVCNT LINEKWGREE ITYDTPFKRE KSFEIVIMVL KDKFQVAVNG KHTLLYGHRI GPEKIDTLGI YGKVNIHSIG FSFSSDLQST
    QASSLELTEI SRENVPKSGT PQLRLPFAAR LNTPMGPGRT VVVKGEVNAN AKSFNVDLLA GKSKDIALHL NPRLNIKAFV RNSFLQESWG
    EEERNITSFP FSPGMYFEMI IYCDVREFKV AVNGVHSLEY KHRFKELSSI DTLEINGDIH LLEVRSW.

    What applications can LGALS8 HUMAN, HIS Protein be used in?
    LGALS8 HUMAN, HIS Protein can probably be used in western blot, ELISA and Lateral Flow.

    What is the endotoxin level for LGALS8 HUMAN, HIS Protein?
    The endotoxin level is minimal, LGALS8 HUMAN, HIS Protein was purified using conventional chromatography techniques.


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.

Lgals8 Human His

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Frequently asked questions

1. Which company offers Recombinant Growth Factors at competitive prices?

ProSpec offers vast array of Growth Factors such as EGF| IGF1 | Leptin| VEGF and much more at affordable descent prices to meet academic budgets
ProSpec provides High Purity Growth Factors for 30 years, purity exhibits 95% and more as visualized by SDS-PAGE gel.
Growth Factors are in stock for immediate delivery via FedEx which enables scientists and researchers to perform immediate experiments.
Growth Factors are shipped globally using ProSpec’s custom tailored Styrofoam insulated box and premium ice packs that ensure maximum protein stability during transit to your laboratory.

2. Who can produce custom Growth Factor for me?

ProSpec offers custom production of recombinant Growth Factors, managing the entire process from gene design and cloning to protein expression and fermentation. Harvest and cell breakage. Purification using standard chromatography, quality control testing, and formulation. Freeze-drying (lyophilization) is available as an option. For more information contact us at info@prospecbio.com

3. How long does it take to produce a custom Growth Factor

The production time line for a custom recombinant growth factor can take about 5-7 weeks.

4. Where can i find biologically active Growth Factors?

ProSpec offers biologically functional Growth Factors such as Prolactin | Erythropoietin | PDGF-BB which are rigorously tested in-vitro to provide researchers world wide BioActive Growth Factors.

5. What is the activity validation method for Growth Factors?

ProSpec uses cell-based bioassays that measures the biological activity, for example:
Activin-A is validated by Activin-responsive luciferase assay, SMAD2/3 phosphorylation.
CSF, G-CSF, GM-CSF, M-CSF are validated by Cytokine-dependent cell proliferation assay.
CTGF is validated by Fibroblast proliferation or migration assay.
EGF is validated by NIH3T3 or Balb/3T3 proliferation assay.
Epigen (EPGN) is validated by EGFR activation assay, cell proliferation.
Erythropoietin (EPO) is validated by TF-1 or UT-7 erythroid cell proliferation assay.
Fibroblast Growth Factors is validated by NIH3T3 proliferation assay.
IGF-1 and IGF-2 are validated by Cell proliferation assay (MCF-7, Saos-2, BALB/3T3).

6. Is the Growth Factor full length or partial?

The Growth Factor proteins are both full length and partial while majority of them are active mature proteins rather than a full-length precursor. ProSpec active mature proteins exhibits higher expression yields, better stability, Easier purification and equivalent biological activity as full length precursor.

7. Is the Growth Factor monomeric or dimeric form?

This depends on the Growth Factor. ProSpec Growth Factors are supplied in the native biologically active oligomeric state, which can be monomeric, dimeric, trimeric, or even multimeric since because receptor binding and biological activity often depend on correct oligomerization.
The EGF, Epigen, Fibroblast Growth Factors (FGF1, FGF2, FGF7/KGF)
HDGF, IGFBPs (IGFBP-1 to IGFBP-7), IGF2 are usually provided as monomer proteins though Activin-A and myostatin are supplied as homodimers.

8. What is the Growth Factor purity and how was it determined?

The Growth Factors purity ranges from high purity of ≥95% to premium grade ≥97%.
ProSpec uses SDS-PAGE Coomassie Blue Staining as the primary purity method which Visualizes protein bands. Some SDS-PAGE gels are stained with Silver Stain. Other analytical methods include RP-HPLC [ High-resolution purity determination ] , SEC-HPLC for the detections of aggregates and fragments and Western Blot to confirm Growth Factors identity.

9. Is the Growth Factor sequence verified?

The amino acid sequence verification is performed at DNA & protein level.
Sanger DNA Sequencing verifies the expression plasmid having correct coding.
LC-MS is used to verify the molecular weight of the final purified Growth Factor
Prospec also uses Edman N-terminal Sequencing to determine the amino-terminal sequence.

10. What is the endotoxin level in Growth Factors and how do you test LPS ?

ProSpec Growth Factors are tested for endotoxin also named LPS [ lipopolysaccharide ] which is found in the outer membrane of Gram-negative bacteria which can affect cytokine secretion, cell proliferation and stem cell.
ProSpec measures endotoxin using the Limulus Amebocyte Lysate [ LAL ] assay such as Gel-Clot.
ProSpec standard Endotoxin level for cytokines is usually <1 EU/ug.
What Does "EU" Mean? EU = Endotoxin Units

11. Is there host cell protein contamination?

There might be a minor existence of host-cell proteins post chromatography purification and quality-control procedures that greatly minimize these impurities. ProSpec tests host-cell protein levels by SDS-PAGE silver staining, or mass spectrometry.

12. Is the protein tested in vitro, in-vivo cell culture, stem cells, T cells, ELISA, western blot?

PoSpec Growth Factors proteins are usually tested for biological activity and identity, while some proteins are not though supported by literature and customer experience. Interleukins are tested in T-cell, NK-cell, PBMC, stem cell culture. Interferons are tested in Antiviral assays, immune-cell activation, TNFA proteins are tested in Apoptosis, inflammation and immune studies. ProSpec does not conduct in-vivo or animal injections experiments in house or our source.