PILRB Proteins

Protein Information

Paired receptors consist of highly related activating and inhibitory receptors and are widely involved in the regulation of the immune system. PILRB is thought to act as a cellular signaling activating receptor that associates with ITAM-bearing adapter molecules on the cell surface.Cell signaling pathways rely on a dynamic interaction between activating and inhibiting processes. SHP-1-mediated dephosphorylation of protein tyrosine residues is central to the regulation of several cell signaling pathways. Two types of inhibitory receptor superfamily members are immunoreceptor tyrosine-based inhibitory motif (ITIM)-bearing receptors and their non-ITIM-bearing, activating counterparts. Control of cell signaling via SHP-1 is thought to occur through a balance between PILRalpha-mediated inhibition and PILRbeta-mediated activation. These paired immunoglobulin-like receptor genes are located in a tandem head-to-tail orientation on chromosome 7. This particular gene encodes the non-ITIM-bearing member of the receptor pair, which has a truncated cytoplasmic tail relative to its ITIM-bearing partner and functions in the activating role. Alternative splicing has been observed at this locus and three variants, encoding two distinct isoforms, are described. Additional transcript variants have been identified but their full-length nature has not been determined.

Synonyms

activating receptor PILRbeta; activating receptor PILR-beta; cell surface receptor FDFACT; cell surface receptor FDFACT1; cell surface receptor FDFACT2; FDFACT; FDFACT1; FDFACT2; LOC681069; paired immunoglobin-like receptor beta; paired immunoglobin-like type 2 receptor beta; paired immunoglobulin-like receptor beta; paired immunoglobulin-like type 2 receptor beta; PILRB; PP1551; similar to paired immunoglobin-like type 2 receptor beta