SIRP gamma/CD172g Antibody

Images

 
Western blot shows lysates of NK-92 human natural killer lymphoma cell line, Jurkat human acute T cell leukemia cell line, and human thymus tissue. PVDF membrane was probed with 0.5 µg/mL of Sheep Anti-Human SIRP ...read more
Human peripheral blood monocytes were stained with Sheep Anti-Human SIRP gamma /CD172g Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4486) followed by Phycoerythrin-conjugated Anti-Sheep IgG Secondary ...read more

Product Details

Summary
Reactivity HuSpecies Glossary
Applications WB, Flow, CyTOF-ready
Clonality
Polyclonal
Host
Sheep
Conjugate
Unconjugated
Concentration
LYOPH

Order Details

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Catalog# & Formulation Size Price

SIRP gamma/CD172g Antibody Summary

Immunogen
Chinese hamster ovary cell line CHO-derived recombinant human SIRP gamma /CD172g
Val64-Ser364, (Val263Ala) and (Ser286Leu)
Accession # Q9P1W8
Specificity
Detects human SIRP gamma /CD172g in direct ELISAs and Western blots. In direct ELISAs, less than 5% cross-reactivity with recombinant human (rh) SIRP alpha , rhSIRP beta 1, and recombinant mouse SIRP alpha is observed.
Source
N/A
Isotype
IgG
Clonality
Polyclonal
Host
Sheep
Gene
SIRPG
Purity Statement
Antigen Affinity-purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • CyTOF-ready
  • Flow Cytometry 2.5 ug/10^6 cells
  • Western Blot 0.5 ug/mL

Packaging, Storage & Formulations

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.
Buffer
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.
Preservative
No Preservative
Concentration
LYOPH
Reconstitution Instructions
Sterile PBS to a final concentration of 0.2 mg/mL.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for SIRP gamma/CD172g Antibody

  • bA77C3.1
  • CD172g antigen
  • CD172g
  • FLJ42230
  • signal-regulatory protein beta 2
  • Signal-regulatory protein beta-2
  • signal-regulatory protein gamma
  • SIRP beta 2
  • SIRP gamma
  • SIRP-B2
  • SIRPB2CD172 antigen-like family member B
  • SIRP-beta-2
  • SIRPG
  • SIRPgamma
  • SIRP-gamma

Background

Signal regulatory protein gamma (SIRP gamma , designated CD172g), also called SIRP beta 2, is a monomeric 45-47 kDa type I transmembrane glycoprotein belonging to the SIRP/SHPS (CD172) family of the Ig superfamily (1 ‑ 5). SIRP members are “paired receptors” with homology in the extracellular domain but variability in the C‑terminus and signaling function (1, 2). The 387 amino acid (aa) SIRP gamma sequence contains a 28 aa potential signal sequence, a 332 aa extracellular domain (ECD) with four potential N‑glycosylation sites, a 23 aa transmembrane domain and a 4 aa cytoplasmic sequence. SIRP gamma contains one V-type Ig‑like domain that contains a J‑like sequence and two C1-type Ig‑like domains within its ECD (1, 2). Isoforms that lack one (isoform 2, 276 aa) or two (isoform 3, 170 aa) membrane-proximal C‑type Ig-like domains have been described (5). Within the ECD, human SIRP gamma isoform 1 shares 78% aa identity with human SIRP beta 1, and appears to have structurally similar orthologs only in rhesus monkey and chimpanzee (100% and 91% aa identity, respectively) (2). SIRP gamma is the only SIRP known to be expressed on T cells, CD56bright NK cells and activated NK cells; it is not expressed on myeloid cells (5, 6). It shows adhesion to CD47, but at lower affinity than SIRP alpha (6). Expression of SIRP gamma on T cells suggests a role as an accessory protein interacting with CD47‑expressing antigen presenting cells (5, 6). Unlike SIRP alpha that has cytoplasmic ITIM domains, and SIRP beta 1 that interacts with DAP-12, SIRP gamma does not contain any obvious signaling mechanism (1, 2, 6). However, SIRP gamma -mediated adhesion appears to promote antigen-specific T cell proliferation and costimulate T cell activation (5).

  1. Barclay, A.N. & M.H. Brown (2006) Nat. Rev. Immunol. 6:457.
  2. vanBeek, E.M. et al. (2005) J. Immunol. 175:7781.
  3. van den Berg, T.K. et al. (2005) J. Immunol. 175:7788.
  4. Ichigotani, Y. et al. (2000) J. Hum. Genet. 45:378.
  5. Piccio, L. et al. (2005) Blood 105:2421.
  6. Brooke, G. et al. (2004) J. Immunol. 173:2562.

Limitations

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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Bioinformatics

Gene Symbol SIRPG
Uniprot