Human SIRP beta 2 Alexa Fluor® 700-conjugated Antibody

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Human SIRP beta 2 Alexa Fluor® 700-conjugated Antibody Summary

Species Reactivity
Detects human SIRP beta 2 in direct ELISAs.
Monoclonal Mouse IgG2B Clone # 1008702
Protein A or G purified from hybridoma culture supernatant
HEK293 human embryonic kidney cell line, HEK293 derived Human SIRP beta 2
Accession # Q5JXA9
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Alexa Fluor 700 (Excitation= 675-700 nm, Emission= 723 nm)


Recommended Concentration
Flow Cytometry
0.25-1 µg/106 cells
HEK293 Human Cell Line Transfected with Human SIRP beta 2 and eGFP and THP-1 Monocytic Leukemia Cell Line

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.

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Preparation and Storage

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 beta 2

Signal-regulatory protein beta-2(SIRP-beta-2), is a ~37 kDa monomeric single pass type I membrane glycoprotein. It belongs to the SIRP/SHPS (CD172) family of the immunoglobulin (Ig) superfamily (1). The SIRP family are paired receptors that have similar extracellular domains but differing C-terminal domains and functions (1). SIRP-beta-2 contains an N-terminal signal peptide (aa1-32), two extracellular Ig-like domains: a V-type 1 (aa 33-143) and a V-type 2 (aa 157-258) containing three potential N-linked glycosylation sites, a helical transmembrane domain (aa 288-308), and a cytoplasmic domain (aa 309-342) (1). A positively charged residue within the transmembrane domain, in analogy to SIRP-beta-1, is implicated to mediate interaction with the adaptor DAP12 protein, which contains immunoreceptor tyrosine-based activation motifs (ITAMs) (2). Proteins in the SIRP family are typically expressed in immune cells, especially in the myeloid lineages (3). Based on expression patterns, SIRPs are thought to have roles in immune regulation (4). SIRP family members role in innate immunity and host defense has potential significance as a therapeutic target in cancer and inflammation (5, 6). There are currently no known mouse or rat homologs for this protein.

  1. van Beek, E.M. et al. (2005) J. Immunol. 175:7781.
  2. Liu, Y. et al. (2005) Journal of Biological Chemistry. 280:36132.
  3. Matozaki, T. et al. (2009) Trends in Cell Biology. 19:72.
  4. Barclay A.N. et al. (2006) Nat Rev Immunol. 6:457.
  5. Barclay A.N. et al. (2014) Annu Rev Immunol. 32:25.
  6. Veillette A. (2018) Trends Immunol. 39:173.
Long Name
Signal-regulatory Protein beta 2
Entrez Gene IDs
284759 (Human)
Alternate Names
dJ776F14.2; Protein Tyrosine Phosphatase Non-Receptor Type Substrate 1-Like 3; Protein Tyrosine Phosphatase Non-Receptor Type Substrate Protein; Protein Tyrosine Phosphatase, Non-Receptor Type 1-Like; Protein Tyrosine Phosphatase, Non-Receptor Type Substrate 1-Like 3; PTPN1L; PTPNS1L3; Signal-Regulatory Protein Beta 2; Signal-Regulatory Protein Beta-2; SIRP beta 2; SIRP-beta-2; SIRPG

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