This gene encodes a transmembrane signaling polypeptide which contains an immunoreceptor tyrosine-based activation motif (ITAM) in its cytoplasmic domain. The encoded protein may associate with the killer-cell inhibitory receptor (KIR) family of membrane glycoproteins and may act as an activating signal transduction element. This protein may bind zeta-chain (TCR) associated protein kinase 70 kDa (ZAP-70) and spleen tyrosine kinase (SYK) and play a role in signal transduction, bone modeling, brain myelination, and inflammation. Mutations within this gene have been associated with polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy (PLOSL), also known as Nasu-Hakola disease. Its putative receptor, triggering receptor expressed on myeloid cells 2 (TREM2), also causes PLOSL. Multiple alternative transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Mar 2010]
Subcellular location: Extracellular
Synonyms: DAP 12, DAP12, DNAX activation protein 12, DNAX-activation protein 12, KAR-associated protein, KARAP, Killer activating receptor associated protein, Killer-activating receptor-associated protein, PLOSL, TYOBP_HUMAN, TYRO protein tyrosine kinase binding protein, TYRO protein tyrosine kinase-binding protein, TYROBP.