Linker for Activation of T cells

2704016797ENSG00000213658ENSMUSG00000030742O43561O54957NM_001014987NM_001014988NM_001014989NM_014387NM_010689NP_001014987NP_001014988NP_001014989NP_055202NP_034819The Linker for activation of T cells, also known as linker of activated T cells or LAT, is a protein which in humans is encoded by the LAT gene. Alternative splicing results in multiple transcript variants encoding different isoforms. The Linker for activation of T cells, also known as linker of activated T cells or LAT, is a protein which in humans is encoded by the LAT gene. Alternative splicing results in multiple transcript variants encoding different isoforms. The protein encoded by this gene is phosphorylated by ZAP70/Syk protein tyrosine kinases following activation of the T-cell antigen receptor (TCR) signal transduction pathway. This transmembrane protein localizes to lipid rafts (also known as glycosphingolipid-enriched microdomains or GEMs) and acts as a docking site for SH2 domain-containing proteins. Upon phosphorylation, this protein recruits multiple adaptor proteins and downstream signaling molecules into multimolecular signaling complexes located near the site of TCR engagement. LAT was described in the early 1990s as a phosphoprotein of 36–38 kDa (pp. 36–38) rapidly phosphorylated on tyrosine residues following TCR ligation. Cloning of the gene revealed that the protein product is a type III (leaderless) transmembrane protein of 262 aminoacids (long form) or 233 aminoacids (short form) in humans, 242 aminoacids in mouse, and 241 aminoacids in rat. The Linker for Activation of T cells has been shown to interact with: This article incorporates text from the United States National Library of Medicine, which is in the public domain.