Human SIRP alpha /CD172a Fluorescein-conjugated Antibody

Name: Human SIRP alpha /CD172a Fluorescein-conjugated Antibody
Brand: R&D Systems
SKU: FAB4546F

Catalog #: FAB4546F Datasheet / COA / SDS

Discontinued Product

FAB4546F has been discontinued.

View all SIRP alpha/CD172a products.

Detection of SIRP alpha /CD172a in U937 Human Cell Line by Flow Cytometry.

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All SIRP alpha/CD172a Antibodies

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Human SIRP alpha /CD172a Fluorescein-conjugated Antibody Summary

Species Reactivity

Human

Specificity

Detects human SIRP alpha /CD172a in direct ELISAs and Western blots. In direct ELISAs, 50-100% cross-reactivity with recombinant human (rh) SIRP beta 1 and no cross-reactivity with rhSIRP beta 2 is observed. In Western blots, approximately 10% cross-reactivity with rhSIRP beta 1 and no cross-reactivity with rhSIRP beta 2 is observed.

Source

Monoclonal Mouse IgG_2B Clone # 602411

Purification

Protein A or G purified from hybridoma culture supernatant

Immunogen

Chinese hamster ovary cell line CHO-derived recombinant human SIRP alpha /CD172a
Gly27-Asn370 (predicted)
Accession # P78324

Formulation

Supplied in a saline solution containing BSA and Sodium Azide.

Label

Fluorescein (Excitation= 488 nm, Emission= 515-545 nm)

Applications

Recommended Concentration

Sample

Flow Cytometry

10 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.

Scientific Data

Flow Cytometry

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Detection of SIRP alpha /CD172a in U937 Human Cell Line by Flow Cytometry. U937 human histiocytic lymphoma cell line was stained with Mouse Anti-Human SIRPa/CD172a Fluorescein-conjugated Monoclonal Antibody (Catalog # FAB4546F, filled histogram) or isotype control antibody (Catalog # IC0041F, open histogram). View our protocol for Staining Membrane-associated Proteins.

Reconstitution Calculator

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: SIRP alpha/CD172a

SIRP alpha (Signal Regulatory Protein alpha), also known as CD172a, SHPS1 and BIT is a variably glycosylated 90-120 kDa member of the SIRP family of proteins. It is widely expressed, being found on neurons, microglia/macrophages, endothelium, and fibroblasts. SIRP alpha has a variety of functions, including presynaptic organization, inhibition of integrin action, and induction of myogenesis. It binds to CD47 and likely other ligands. Mature human SIRP alpha is a 477 amino acid (aa) type I transmembrane glycoprotein. It contains an extracellular region (aa 27-372) that shows one V-type Ig-like (aa 32-137) and two C2-type Ig-like domains (aa 147-347). Its cytoplasmic domain possesses two ITIMs which interact with protein tyrosine phosphatases. There is one alternative start site at Met102 plus a four aa insertion after Gln421. Over aa 27-370, human SIRP alpha shares 61% aa identity with mouse SIRP alpha.

Long Name

Signal-regulatory Protein alpha

Entrez Gene IDs

140885 (Human); 19261 (Mouse); 25528 (Rat); 494566 (Porcine); 609452 (Canine); 101926317 (Cynomolgus Monkey)

Alternate Names

BIT; BITbrain-immunoglobulin-like molecule with tyrosine-based activation motifs; Brain Ig-like molecule with tyrosine-based activation motifs; CD172 antigen-like family member A; CD172a antigen; CD172a; Inhibitory receptor SHPS-1; Macrophage fusion receptor; MFR; MFRtyrosine phosphatase SHP substrate 1; MyD-1 antigen; MYD1; MYD-1; P84; protein tyrosine phosphatase, non-receptor type substrate 1; PTPNS1; SHP substrate 1; SHPS1; SHPS-1; SHPS1CD172A; signal-regulatory protein alpha; Signal-regulatory protein alpha-1; Signal-regulatory protein alpha-2; Signal-regulatory protein alpha-3; SIRP alpha; SIRPA; SIRPalpha; Sirp-alpha-1; SIRPalpha2; Sirp-alpha-2; Sirp-alpha-3; SIRPtyrosine-protein phosphatase non-receptor type substrate 1