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Human SR-BI Antibody

Bio-Techne includes R&D Systems | Catalog # MAB8114

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MAB8114
MAB8114-SP

Key Product Details

Species Reactivity

Validated:

Human

Applications

Immunohistochemistry, Western Blot

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 Clone # 947007

Product Summary for Human SR-BI Antibody

Immunogen

Human embryonic kidney cell line HEK293-derived human SR-BI

Specificity

Detects human SR-BI in direct ELISAs and Western blots.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1

Scientific Data Images for Human SR-BI Antibody

Detection of Human SR-BI antibody by Western Blot.

Detection of Human SR-BI by Western Blot.

Western blot shows lysates of human liver tissue and human adrenal gland tissue. PVDF membrane was probed with 2 µg/mL of Mouse Anti-Human SR-BI Monoclonal Antibody (Catalog # MAB8114) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for SR-BI at approximately 80 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
SR-BI antibody in Human Liver by Immunohistochemistry (IHC-P).

SR-BI in Human Liver.

SR-BI was detected in immersion fixed paraffin-embedded sections of human liver using Mouse Anti-Human SR-BI Monoclonal Antibody (Catalog # MAB8114) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Mouse HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS002) and counterstained with hematoxylin (blue). Specific staining was localized to cell membranes in hepatocytes. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.

Applications for Human SR-BI Antibody

Application
Recommended Usage

Immunohistochemistry

5-25 µg/mL
Sample: Immersion fixed paraffin-embedded sections of human liver

Western Blot

2 µg/mL
Sample: Human liver tissue and human adrenal gland tissue
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 1 review rated 4 using MAB8114 in the following applications:

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

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Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: SR-BI

Scavenger Receptor, class B, member 1 (SR-B1), gene name SCARB1, is also known as CD36L1 (CD36-like 1) or CLA-1 (CD36 and LIMPII analogous 1) (1-5). SR-B1 is a transmembrane glycoprotein found on macrophages, liver cells and other steroidogenic cells as a lipoprotein receptor. The 552 amino acid (aa) human SR-B1 contains a central extracellular domain (ECD), flanked by N- and C-terminal transmembrane domains. Human splice variants differ at the N-terminal cytoplasmic and transmembrane domains (SR-BIII, 474 aa), the N-terminal end of the ECD (SR-BII, 409 aa), or the C-terminal cytoplasmic domain (isoform 3, 552 aa) (2). The human SR-B1 ECD shares 80%, 80%, 89%, 86% and 84% aa sequence identity with mouse, rat, porcine, rabbit, and bovine SR-B1, respectively. SR-B1 functions in reverse cholesterol transport (RCT), which is thought to be anti-atherogenic by facilitating transport of cholesteryl esters from macrophages back to the liver for degradation (3). In rodent hepatocytes, SR-B1 is the main receptor mediating RCT, while human hepatocytes also express a second mediator, CETP (cholesteryl ester transfer protein) (3-5). The importance of SR-B1 in humans is shown by human SR-B1 genetic variants that alter lipid metabolism (3-7). For example, the P297S polymorphism lowers uptake of high-density lipoprotein (HDL) cholesterol in the liver and increases plasma HDL cholesterol (3-5). On endothelial cells, signaling through SR-B1 activates nitric oxide production, which attenuates monocyte adhesion (6). On adrenocortical cells, SR-B1 mediates uptake of cholesteryl esters from HDL for the synthesis of glucocorticoid hormones such as cortisol (3-5). On platelets, HDL binding to surface SR-B1 inhibits aggregation and increases platelet survival time (3-5). On human ovarian granulosa cells, deficiency of SR-B1 correlates with low fertility (3). SR-B1 and its SR-BII isoform also bind bacterial lipopolysaccharides, facilitating uptake of various bacteria by cells such as peritoneal macrophages (8, 9). This uptake enhances inflammatory responses which, unless properly controlled, can result in sepsis (9-11).

References

  1. Calvo, D. and M. A. Vega (1993) J. Biol. Chem. 268:18929.
  2. Swiss-Prot accession Q8WTV0
  3. Chadwick, A.C. and D. Sahoo (2013) Curr. Opin. Endocrinol. Diabetes Obes. 20:124.
  4. Hoekstra, M. et al. (2012) Curr. Opin. Lipidol. 23:127.
  5. Vergeer, M. et al. (2011) N. Engl. J. Med. 364:136.
  6. Guo, L. et al. (2011) J. Lipid Res. 52:2272.
  7. Saddar, S. et al. (2012) Circ. Res. 112:140.
  8. Vishnyakova, T.G. et al. (2006) Proc. Natl. Acad. Sci. USA 103:16888.
  9. Baranova, I.N. et al. (2012) J. Immunol. 188:1371.
  10. Leelahavanichkul, A. et al. (2012) J. Immunol. 188:2749.
  11. Guo, L. et al. (2009) J. Biol. Chem. 284:19826.

Long Name

Scavenger Receptor Class B, Member I

Alternate Names

CD36L1, CLA1, HDLQTL6, SCARB1, SR-B1, SRBI

Entrez Gene IDs

949 (Human); 20778 (Mouse); 25073 (Rat)

Gene Symbol

SCARB1

Additional SR-BI Products

Product Documents for Human SR-BI Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human SR-BI Antibody

For research use only

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