Mouse PILR-alpha Antibody Summary
Leu21-Val197
Accession # Q2YFS3
Applications
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
Detection of PILR‑ alpha in J774A.1 Mouse Cell Line by Flow Cytometry. J774A.1 mouse reticulum cell sarcoma macrophage cell line was stained with Goat Anti-Mouse PILR-a Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4318, filled histogram) or control antibody (Catalog # AB-108-C, open histogram), followed by Phycoerythrin-conjugated Anti-Goat IgG Secondary Antibody (Catalog # F0107).
Reconstitution Calculator
Preparation and Storage
- 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: PILR-alpha
PILR-alpha (paired immunoglobulin-like type 2 receptor-alpha; also namedFDF03) is one of two members of a small family of immunoregulatory Ig-superfamily receptors (1, 2). It is a counterpart to PILR-beta and it likely gave rise to PILR-beta through gene duplication and rearrangement (1). The PILRs represent one of many pairs of Ig-like domain-containing receptors that participate in immune regulation. PILR-alpha and -beta should not be confused with the similarly named PIRs (also paired immunoglobulin‑like receptors), or the functionally-related SIRP and ILT/LILR/CD85/LIR family of receptors (2). While PIRs, ILTs and SIRPs contain three to six Ig‑like domains in their extracellular region, PILR-alpha and -beta show only one Ig-like region in their extracellular domain (ECD) (1, 2). Mouse PILR-alpha is a monomeric, 271 amino acid (aa) type I transmembrane (TM) protein (3). It contains a 167 aa ECD, a 21 aa TM segment, and a long, 83 aa cytoplasmic region. The ECD shows one V‑type Ig-like domain between aa 39 - 157, while the cytoplasmic region contains two ITIMs (immunoreceptor Tyr-based inhibitory motifs) between aa 265-270 and 294‑299. Given that ITIMs are known to interact with phosphatases such as PTPN6 and PTPN11, the presence of these motifs makes mouse PILR-alpha an inhibitory receptor. In human, activation of PILR-alpha inhibits CD32/Fc gamma RII-induced calcium mobilization (3). Although CD99 is a known ligand for both PILR-alpha and -beta (4), highest affinity binding seems to occur between CD99 and PILR-alpha (4). Mouse PILR-alpha is found on neutrophils and macrophages (4). Mouse PILR-alpha ECD is 43% and 69% aa identical to human and rat PILR-alpha ECD, respectively; it is 75% aa identical to the ECD of mouse PILR-beta (3). One potential isoform of PILR-alpha has been reported. It varies only within the first 28 aa of the signal sequence (5).
- Wilson, M.D. et al. (2006) Physiol. Genomics 27:201.
- Lanier, L.L. (2001) Curr. Opin. Immunol. 13:326.
- Fournier, N. et al. (2000) J. Immunol. 165:1197.
- Shiratori, I. et al. (2004) J. Exp. Med. 199:525.
- SwissProt # Q2YFS3.
Product Datasheets
Citation for Mouse PILR-alpha 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.
1 Citation: Showing 1 - 1
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Endothelial CD99 supports arrest of mouse neutrophils in venules and binds to neutrophil PILRs
Authors: D Goswami, S März, YT Li, A Artz, K Schäfer, R Seelige, M Pacheco-Bl, D Jing, MG Bixel, M Araki, K Araki, K Yamamura, D Vestweber
Blood, 2017-02-21;0(0):.
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