SR-BI Antibody

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-99690

Novus Biologicals, part of Bio-Techne
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Key Product Details

Species Reactivity

Validated:

Human

Applications

Immunocytochemistry/ Immunofluorescence, Immunoprecipitation, Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Rabbit IgG

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

View all SR-BI Antibodies »

Product Summary for SR-BI Antibody

Immunogen

Produced in rabbits immunized with purified, recombinant Human SR-BI (Accession#: NP_005496.4; Pro33-Tyr443)

Clonality

Polyclonal

Host

Rabbit

Isotype

IgG

Theoretical MW

60 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Description

This antibody can be stored at 2C to 8C for one month without detectable loss of activity. Antibody products are stable for twelve months from date of receipt when stored at -20C to -80C. Avoid repeated freeze-thaw cycles.

Scientific Data Images for SR-BI Antibody

Western Blot: SR-BI Antibody [NBP2-99690]

Western Blot: SR-BI Antibody [NBP2-99690]

Western Blot: SR-BI Antibody [NBP2-99690] - Anti-SR-BI rabbit polyclonal antibody at 1:500 dilution. Lane A: HepG2 Whole Cell Lysate. Lysates/proteins at 30 ug per lane. Secondary Goat Anti- Rabbit IgG H&L (Dylight 800) at 1/10000 dilution. Developed using the Odyssey technique. Performed under reducing conditions. Predicted band size: 60 kDa. Observed band size: 81 kDa (We are unsure as to the identity of these extra bands).
Immunocytochemistry/ Immunofluorescence: SR-BI Antibody [NBP2-99690]

Immunocytochemistry/ Immunofluorescence: SR-BI Antibody [NBP2-99690]

Immunocytochemistry/Immunofluorescence: SR-BI Antibody [NBP2-99690] - Immunofluorescence staining of SR-BI in HeLa cells. Cells were fixed with 4% PFA, permeabilzed with 0.3% Triton X-100 in PBS, blocked with 10% serum, and incubated with rabbit anti-human SR-BI polyclonal antibody (1:5000) at 4C overnight. Then cells were stained with the Alexa Fluor(R)488-conjugated Goat Anti-rabbit IgG Secondary antibody (green) and counterstained with DAPI (blue). Positive staining was localized to cell membrane and cytoplasm.
Immunoprecipitation: SR-BI Antibody [NBP2-99690]

Immunoprecipitation: SR-BI Antibody [NBP2-99690]

Immunoprecipitation: SR-BI Antibody [NBP2-99690] - SR-BI was immunoprecipitated using: Lane A: 0.5 mg Hela Whole Cell Lysate. Lane B: 0.5 mg HepG2 Whole Cell Lysate. 1 ul anti-SR-BI rabbit polyclonal antibody and 15 ul of 50 % Protein G agarose. Primary antibody: Anti-SR-BI rabbit polyclonal antibody, at 1:500 dilution. Secondary antibody: Dylight 800-labeled antibody to rabbit IgG (H+L), at 1:5000 dilution. Developed using the Odyssey technique. Performed under reducing conditions. Predicted band size: 60 kDa. Observed band size: 81 kDa

Applications for SR-BI Antibody

Application
Recommended Usage

Immunocytochemistry/ Immunofluorescence

1:1500-1:50000

Immunoprecipitation

0.2-1 uL/mg of lysate

Western Blot

1:500-1:1000
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Antigen and protein A Affinity-purified

Formulation

0.2 um filtered solution in PBS

Preservative

No Preservative

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: SR-BI

SR-BI (scavenger receptor class B member 1, SCARB1) belongs to the CD36 family and acts as a cell surface lipoprotein receptor for a variety of ligands including high density lipoprotein (HDL), phospholipids, phosphatidylserine, and lipoproteins such as lipopolysaccharide (LPS). SR-BI mediates selective uptake of HDL cholesteryl (HDL-C) ester in the liver, steroidogenic tissues, and adipose tissue and facilitates the flux of free and esterified cholesterol between the cell surface and apoB-containing lipoproteins and modified lipoproteins. SR-BI plays a role in antigen capture and cross-presentation from bacteria, parasites, and viruses such as Hepatitis C. In endothelial cells and macrophages, SR-BI is involved in anti-inflammatory and pro-survival signaling, providing protection against atherosclerosis and clearing apoptotic cells (efferocytosis) (1, 2).

At least 5 different human splice variants have been identified with theoretical molecular weights ranging from 60.9 kDa for the canonical sequence to 45 kDa for an N-terminally truncated variant (SR-BII) (3). The extracellular domain of human SR-BI (CLA-1) shares 80%, 80%, 89%, 86% and 84% aa sequence identity with mouse, rat, porcine, rabbit, and bovine SR-BI, respectively. SR-BI is highly glycosylated and removal of N-linked glycosylation reduces lipid transport.

References

1. Linton MF, Tao H, Linton EF, Yancey PG. (2017) SR-BI: A Multifunctional Receptor in Cholesterol Homeostasis and Atherosclerosis. Trends Endocrinol Metab. 28(6):461-472. PMID: 28259375

2. Hoekstra M, Sorci-Thomas M. (2017) Rediscovering scavenger receptor type BI: surprising new roles for the HDL receptor. Curr Opin Lipidol. 28(3):255-260. PMID: 28301373

3. Shen WJ, Asthana S, Kraemer FB, Azhar S. (2018) Scavenger receptor B type 1: expression, molecular regulation, and cholesterol transport function.

Long Name

Scavenger Receptor Class B, Member I

Alternate Names

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

Gene Symbol

SCARB1

Additional SR-BI Products

Product Documents for SR-BI Antibody

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Certificate of Analysis

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Product Specific Notices for SR-BI Antibody

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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