Aliases for CD3G Gene
External Ids for CD3G Gene
Previous GeneCards Identifiers for CD3G Gene
The protein encoded by this gene is the CD3-gamma polypeptide, which together with CD3-epsilon, -delta and -zeta, and the T-cell receptor alpha/beta and gamma/delta heterodimers, forms the T-cell receptor-CD3 complex. This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. The genes encoding the epsilon, gamma and delta polypeptides are located in the same cluster on chromosome 11. Defects in this gene are associated with T cell immunodeficiency. [provided by RefSeq, Jul 2008]
GeneCards Summary for CD3G Gene
CD3G (CD3g Molecule) is a Protein Coding gene. Diseases associated with CD3G include Immunodeficiency 17 and Immunodeficiency 19. Among its related pathways are TCR signaling in naive CD4+ T cells and ERK Signaling. Gene Ontology (GO) annotations related to this gene include protein heterodimerization activity and receptor signaling complex scaffold activity. An important paralog of this gene is CD3D.
UniProtKB/Swiss-Prot Summary for CD3G Gene
Part of the TCR-CD3 complex present on T-lymphocyte cell surface that plays an essential role in adaptive immune response. When antigen presenting cells (APCs) activate T-cell receptor (TCR), TCR-mediated signals are transmitted across the cell membrane by the CD3 chains CD3D, CD3E, CD3G and CD3Z. All CD3 chains contain immunoreceptor tyrosine-based activation motifs (ITAMs) in their cytoplasmic domain. Upon TCR engagement, these motifs become phosphorylated by Src family protein tyrosine kinases LCK and FYN, resulting in the activation of downstream signaling pathways (PubMed:2470098). In addition to this role of signal transduction in T-cell activation, CD3G plays an essential role in the dynamic regulation of TCR expression at the cell surface (PubMed:8187769). Indeed, constitutive TCR cycling is dependent on the di-leucine-based (diL) receptor-sorting motif present in CD3G.