Human SIRP alpha /CD172a
Antibody

Name: Human SIRP alpha /CD172a Antibody
Brand: R&D Systems
SKU: MAB4546
Rating: 4.3 (3 reviews)

Catalog #: MAB4546
2 Citations 3 Reviews Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
MAB4546
MAB4546-SP

Detection of Human SIRP alpha /CD172a by Western Blot.

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All SIRP alpha/CD172a Antibodies

Product Details

Citations (2)

FAQs

Supplemental Products

Reviews (3)

Summary Data Examples Preparation and Storage Reconstitution Calculator Background Product Datasheets Related Research Areas

Human SIRP alpha /CD172a
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

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.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Western Blot

2 µg/mL

See below

Flow Cytometry

2.5 µg/10⁶ cells

See below

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Immunocytochemistry

8-25 µg/mL

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

Western Blot

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Detection of Human SIRP alpha /CD172a
by Western Blot. Western blot shows lysates of A549 human lung carcinoma cell line, U2OS human osteosarcoma cell line, U937 human histiocytic lymphoma cell line, and human granulocytes. PVDF membrane was probed with 2 µg/mL of Mouse Anti-Human SIRP alpha /CD172a
Monoclonal Antibody (Catalog # MAB4546) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for SIRP alpha /CD172a
at approximately 70-95 kDa (as indicated). This experiment was conducted under non-reducing conditions and using Western Blot Buffer Group 1.

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 Monoclonal Antibody (Catalog # MAB4546, filled histogram) or isotype control antibody (Catalog # MAB0041, open histogram), followed by Allophycocyanin-conjugated Anti-Mouse IgG F(ab')₂Secondary Antibody (Catalog # F0101B).

Immunocytochemistry

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SIRP alpha /CD172a in THP‑1 Human Cell Line. SIRPa/CD172a was detected in immersion fixed THP-1 human acute monocytic leukemia cell line using Mouse Anti-Human SIRPa/CD172a Monoclonal Antibody (Catalog # MAB4546) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI. Specific staining was localized to cell membranes. View our protocol for Fluorescent ICC Staining of Non-adherent Cells.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Sterile PBS to a final concentration of 0.5 mg/mL.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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: SIRP alpha/CD172a

SIRP alpha (Signal regulatory protein alpha; also 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 presynsptic 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

Product Datasheets

Product Datasheet

COA

SDS

Related Research Areas

Citations for Human SIRP alpha /CD172a
Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

2 Citations: Showing 1 - 2
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An agonistic anti-signal regulatory protein alpha antibody for chronic inflammatory diseases
Authors: Markus M. Xie, Bingbing Dai, Jason A. Hackney, Tianhe Sun, Juan Zhang, Janet K. Jackman et al.
Cell Reports Medicine
TRIM2, a novel member of the antiviral family, limits New World arenavirus entry
Authors: N Sarute, N Ibrahim, B Medegan Fa, M Lavanya, C Cuevas, S Stavrou, G Otkiran-Cl, H Tyynismaa, J Henao-Meji, SR Ross
PLoS Biol., 2019-02-06;17(2):e3000137.
Species: Human
Sample Types: Whole Cells
Applications: Flow Cytometry