SELP

Domain

The C-type lectin domain is required for binding to integrins (PubMed:37184585). Binding to soluble integrins alpha-V/beta-3 (ITGAV:ITGB3) and alpha-IIb/beta3 (ITGA2B:ITGB) is cation-dependent in order of preference of 1 mM Mn(2+) > Mg(2+) > Ca(2+) (PubMed:37184585). Binds to the allosteric site (site 2) of integrins and activates them (PubMed:37184585). The interaction with integrins may mediate cell-cell interactions and cell adhesion (PubMed:37184585).

Function

Ca(2+)-dependent receptor for myeloid cells that binds to carbohydrates on neutrophils and monocytes. Mediates the interaction of activated endothelial cells or platelets with leukocytes. The ligand recognized is sialyl-Lewis X. Mediates rapid rolling of leukocyte rolling over vascular surfaces during the initial steps in inflammation through interaction with SELPLG. Mediates cell-cell interactions and cell adhesion via the interaction with integrin alpha-IIb/beta3 (ITGA2B:ITGB3) and integrin alpha-V/beta-3 (ITGAV:ITGB3) (PubMed:37184585).

Sequence Similarities

Belongs to the selectin/LECAM family.

Tissue Specificity

Stored in the alpha-granules of platelets and Weibel-Palade bodies of endothelial cells. Upon cell activation by agonists, P-selectin is transported rapidly to the cell surface.

Cellular localization

• Cell membrane
• Single-pass type I membrane protein

Alternative names

CD62P, GMRP, GRMP, SELP, P-selectin, CD62 antigen-like family member P, Granule membrane protein 140, Leukocyte-endothelial cell adhesion molecule 3, Platelet activation dependent granule-external membrane protein, GMP-140, LECAM3, PADGEM

Database links

swissprot:P16109 omim:173610 swissprot:P49908 swissprot:Q5TI43 entrezGene:6403 swissprot:Q6NUL9 swissprot:Q5TI47 swissprot:Q5TI46 swissprot:Q5TI45