APOB Human

APOB Human

Apolipoprotein

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  • Name :

    APOB Human

    Description:

    Apolipoprotein-B Human

    APOB, APO-B, Apolipoprotein B.

    Product # :

    CYT-1042

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Description

Human APOB produced from Human plasma having a molecular mass of 550 kDa.

Source

Human Plasma.

Formulation

The protein was lyophilized from a 0.5mg/ml solution of 50mM Na2CO3 pH-10 containing 50mM NaCl and 10mM sodium deoxycholate.

Purity

Greater than 95.0%.

More Info

  • Introduction

    ApoB is the main apolipoprotein of LDL, IDL, VLDL and chylomicrons particles that serves as the carrier of lipids (fat molecules), as well as cholesterol, in the water surrounding the cells within every tissue across the body. Though all the functional aspects of Apolipoprotein B within the LDL and other elements are considered to be rather uncertain, it serves as the key organizing protein of all other carriers of lipids. across LDL membranes, apolipoprotein B also serves as a ligand for LDL receptors in many cells across the body, meaning, it shows that lipid carriers that are set to cross into cells with Apolipoprotein B receptors, this is the way that lipids are transported within and into cells.

  • Synonyms

    APOB, APO-B, Apolipoprotein B.

  • Physical Appearance

    Sterile Filtered lyophilized (freeze-dried) powder.

  • Stability

    Lyophilized APOB although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution, APOB 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 APOB in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

  • Human Virus Test

    Starting material donor has been tested and certified negative for antibodies to HIV-1,HIV-2, HCV, HBSAG.

  • Background

    Apolipoprotein-B Human: Unveiling the Key Player in Cholesterol Transport

    Abstract:

    Apolipoprotein-B (ApoB), a pivotal component of lipoproteins, plays a critical role in cholesterol metabolism and transportation. It is primarily synthesized in the liver and intestines, existing in two main isoforms: ApoB-100 and ApoB-48. This research paper aims to provide a comprehensive overview of ApoB human, emphasizing its physiological functions, regulatory mechanisms, and implications in cardiovascular diseases. By delving into the intricacies of ApoB, we can gain valuable insights into its significance as a therapeutic target and potential biomarker.

    Introduction:

    The prevalence of cardiovascular diseases necessitates a deeper understanding of the mechanisms governing cholesterol metabolism. ApoB, an integral component of lipoproteins, holds the key to unlocking vital insights into cholesterol transport and its association with atherosclerosis.

    Structure and Function of Apolipoprotein-B:

    ApoB exhibits a complex molecular structure, consisting of functional domains that enable its interaction with lipids and receptors. ApoB-100, the longer isoform, is primarily associated with low-density lipoprotein (LDL) particles, while ApoB-48 is present in chylomicrons and chylomicron remnants. These isoforms serve distinct roles in lipoprotein metabolism and cholesterol delivery to peripheral tissues.

    Regulation of Apolipoprotein-B:

    The synthesis and secretion of ApoB are tightly regulated processes influenced by various factors, including dietary and genetic factors. Transcriptional and post-transcriptional mechanisms govern the expression and processing of ApoB, ensuring its proper function in cholesterol transport.

    Apolipoprotein-B and Cardiovascular Diseases:

    Elevated levels of ApoB-containing lipoproteins, such as LDL, have been implicated in the development of atherosclerosis and cardiovascular diseases. The ratio of ApoB to ApoA-I, known as the ApoB/ApoA-I ratio, serves as a reliable marker for cardiovascular risk assessment, with higher ratios indicating increased risk.

    Therapeutic Implications of Apolipoprotein-B:

    Targeting ApoB presents a promising avenue for managing dyslipidemia and reducing cardiovascular risk. Strategies aimed at reducing ApoB production or enhancing its clearance have shown efficacy in clinical trials, underscoring the potential of ApoB as a therapeutic target.

    Conclusion:

    Apolipoprotein-B human serves as a cornerstone in cholesterol transport, playing a crucial role in lipoprotein metabolism and its implications for cardiovascular health. By unraveling the intricate interplay between ApoB, cholesterol metabolism, and atherosclerosis, we can pave the way for novel therapeutic interventions and improved risk assessment in cardiovascular diseases.

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.

Apolipoprotein B Human

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Frequently asked questions

1. Which company offers Recombinant cytokines at competitive prices?

ProSpec offers vast array of cytokines such as Interferon-alpha | Interleukin-2 | TNF-alpha | BMP-2 and much more at affordable descent prices to meet academic budgets.
ProSpec provides High Purity cytokines for 30 years, purity exhibits 95% or more by SDS-PAGE gel.
Cytokines are in stock for immediate delivery via FedEx which enables scientists and researchers to perform immediate experiments.
Cytokines 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. Where can i find biologically active cytokines?

ProSpec offers biologically functional cytokines such as Adiponectin | Cardiotrophin | Beta Defensin which are rigorously tested in-vitro to provide researchers world wide BioActive Cytokines.

3. What is the activity validation method for Cytokines?

ProSpec uses cell-based bioassays that measures the biological activity, for example:
Adiponectin is validated using AMPK phosphorylation assay, glucose uptake assay.
Angiopoietin is validated using Endothelial tube formation assay, Tie2 phosphorylation assay.
Apolipoprotein is validated using Lipid-binding assay, receptor-binding assay.
Beta Defensin is validated using Antimicrobial assay.
Betacellulin is validated using Cell proliferation assay (EGFR-positive cells).
Bone Morphogenetic Protein is validated using Alkaline phosphatase induction assay.

4. Is the cytokine full length or partial?

The cytokine 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.

5. Is the cytokine monomeric or dimeric form?

This depends on the cytokine. ProSpec cytokines 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 interleukin and interferon protein family are usually provided as monomer proteins though adiponectin and TNFSF8 are supplied as homodimers.

6. What is the cytokine purity and how was it determined?

The cytokine 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 cytokine identity.

7. Is the cytokine 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 cytokine
Prospec also uses Edman N-terminal Sequencing to determine the amino-terminal sequence.

8. What is the endotoxin level in cytokines and how do you test LPS ?

ProSpec cytokines 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

9. 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.

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

PoSpec 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.