锡克
信号转导衔接蛋白
跨膜蛋白
生物
细胞生物学
酪氨酸
信号转导
磷酸化
SH2域
效应器
原癌基因酪氨酸蛋白激酶Src
激酶
酪氨酸激酶
酪氨酸磷酸化
生物化学
受体
作者
Stefanie Kliche,Jonathan A. Lindquist,Burkhart Schraven
标识
DOI:10.1016/j.smim.2004.08.017
摘要
Transmembrane adapter proteins (TRAPs) represent a relatively new and unique group of signalling molecules in hematopoetic cells. They differ from other signalling proteins as they lack any enzymatic or transcriptional activity, instead they possesses multiple tyrosine-based signalling motifs (TBSMs). Triggering of immunoreceptors induces tyrosine phosphorylation of these motifs by members of the Src-, Syk- or Tec-family of protein tyrosine kinases thus enabling the TRAPs to recruit cytosolic adapter and/or effector molecules via their SH2-domains into close proximity to the immunoreceptors, a position from which they can coordinate and modulate signal transduction pathways important for lymphocyte function.
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