Human SREC-I/SCARF1 Alexa Fluor® 647-conjugated Antibody

Catalog # Availability Size / Price Qty
FAB2409R-025
Human SREC-I/SCARF1 Alexa Fluor® 647-conjugated Antibody in Flow Cytometry
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Human SREC-I/SCARF1 Alexa Fluor® 647-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human SREC‑I/SCARF1 in direct ELISAs. In direct ELISAs, no cross-reactivity with recombinant human SREC-2 is observed.
Source
Monoclonal Mouse IgG2B Clone # 373606
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Mouse myeloma cell line NS0-derived recombinant human SREC‑I/SCARF1
Ser20-Thr421
Accession # Q14162
Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 647

Applications

Recommended Concentration
Sample
Flow Cytometry
5 µL/106 cells
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Example

Flow Cytometry Detection  of SREC‑I/SCARF1 in HUVEC Human Cells by Flow Cytometry. View Larger

Detection of SREC‑I/SCARF1 in HUVEC Human Cells by Flow Cytometry. HUVEC human umbilical vein endothelial cells were stained with Mouse Anti-Human SREC‑I/SCARF1 Alexa Fluor® 647‑conjugated Monoclonal Antibody (Catalog # FAB2409R, filled histogram) or isotype control antibody (Catalog # IC0041R, open histogram). View our protocol for Staining Membrane-associated Proteins.

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Preparation and Storage

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: SREC-I/SCARF1

The scavenger receptor (SR) family comprises a group of functionally defined membrane receptors that share a common ability to bind and internalize modified forms of low density lipoproteins (LDL) such as acetylated LDL (AcLDL) and oxidized LDL(OxLDL) (1‑3). Family members are classified alphabetically. They play important roles in lipid metabolism, in host defence and in the regulation of acquired immunity (2, 4). Scavenger receptor expressed by endothelial cells-I (SREC-I; also called SCARF1) and SREC-2 are two proteins that belong to the F type scavenger receptor group (SR-F1 and SR-F2). The full length cDNA of human SREC-I encodes an 830 amino acid (aa) type I transmembrane protein which contains a 19 aa signal peptide, a 402 aa extracellular region, a 21 aa transmembrane segment, and a 388 aa long cytoplasmic domain. The extracellular region contains ten EGF-like repeats (five of which fit the exact consensus sequence for an EGF-like domain) while the cytoplasmic domain is rich in serine and proline in the N-terminal half, and glycine in the C-terminal segment (5, 6). In addition to the full length form, four SREC-I isoforms exist. Two show insertions of a stop codon in EGF-like domain 8, resulting in mature soluble forms of 323 aa and 318 aa, respectively. A third isoform deletes part of domain 8 plus domains 9 and 10; it continues in-frame to generate a mature transmembrane protein of 725 aa. The last isoform shows only cytoplasmic splicing, with 72 aa substituted for the last 332 aa of the full length form. All three transmembrane forms bind acetylated LDL (6). Native SREC-I is approximately 150 kDa and is expressed by endothelial cells, macrophages and fetal neurons (7, 8). In the extracellular region, human SREC-I shares 76% and 53% aa sequence identity with mouse SREC-I and human SREC-2, respectively.

References
  1. Horiuchi, S. et al. (2003) Amino Acids 25:283.
  2. Greaves, D.R. and S. Gordon (2005) J. Lipid Res. 46:11.
  3. Platt, N. and S. Gordon (1998) Chem. Biol. 5:R193.
  4. Platt, N. and S. Gordon (2001) J. Clin. Invest. 108:649.
  5. Adachi, H. et al. (1997) J. Biol. Chem. 272:31217.
  6. Adachi, H. and M. Tsujimoto (2002) J. Biol. Chem. 277:24014.
  7. Shibata, M. et al. (2004) J. Biol. Chem. 279:40084.
  8. Tanura, Y. et al. (2004) J. Biol. Chem. 279:30938.
Long Name
Scavenger Receptor Expressed by Endothelial Cells 1
Entrez Gene IDs
8578 (Human)
Alternate Names
Acetyl LDL receptor; KIAA0149endothelial cells scavenger receptor; MGC47738; SCARF1; scavenger receptor class F, member 1; Scavenger receptor expressed by endothelial cells 1; SREC1; SRECI; SREC-I; SRECscavenger receptor expressed by endothelial cells; SR-F1

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