First Author | Isakov N | Year | 1997 |
Journal | J Leukoc Biol | Volume | 61 |
Issue | 1 | Pages | 6-16 |
PubMed ID | 9000531 | Mgi Jnum | J:37725 |
Mgi Id | MGI:85117 | Doi | 10.1002/jlb.61.1.6 |
Citation | Isakov N (1997) Immunoreceptor tyrosine-based activation motif (ITAM), a unique module linking antigen and Fc receptors to their signaling cascades. J Leukoc Biol 61(1):6-16 |
abstractText | Signal transduction by the T cell and B cell antigen receptors and by receptors for a variety of immunoglobulins' Fc region is strictly dependent on a receptor subunit cytoplasmic module termed immunoreceptor tyrosine-based activation motif (ITAM). This module exists in one or more copies in each of the receptor-associated signal-transducing molecules and it possesses two repeats of the consensus sequence Tyr-X-X-Leu/Ile spaced by six to eight amino acids. Receptor engagement is followed by a rapid and transient phosphorylation of tyrosine residues within their ITAMs, thereby creating temporary binding sites for Src homology 2 (SH2)-containing signaling molecules operating downstream of the activated receptor. The purpose of this review is to discuss recent findings on the functional role of ITAMs in antigen and Fc receptor-mediated signal transduction, with a particular emphasis on kinases operating upstream and downstream of the ITAMs. |