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signal transducing adaptor protein : ウィキペディア英語版 | signal transducing adaptor protein
Signal transducing adaptor proteins are proteins that are accessory to main proteins in a signal transduction pathway. Adaptor proteins contain a variety of protein-binding modules that link protein-binding partners together and facilitate the creation of larger signaling complexes. These proteins tend to lack any intrinsic enzymatic activity themselves but instead mediate specific protein–protein interactions that drive the formation of protein complexes. Examples of adaptor proteins include MyD88, Grb2 and SHC1. ==Signaling components== Much of the specificity of signal transduction depends on the recruitment of several signalling components such as protein kinases and G-protein GTPases into short lived active complexes in response to an activating signal such as a growth factor binding to its receptor.
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