SKAP1
Template:Short description Template:Infobox gene Src kinase-associated phosphoprotein 1 is an adapter protein that in humans is encoded by the SKAP1 gene.[1][2]
This gene encodes a T cell adapter protein, a class of intracellular molecules with modular domains capable of recruiting additional proteins but that exhibit no intrinsic enzymatic activity. The encoded protein contains a unique N-terminal region followed by a PH domain and C-terminal SH3 domain. Along with the adhesion and degranulation-promoting adapter protein, the encoded protein plays a critical role in inside-out signaling by coupling T-cell antigen receptor stimulation to the activation of integrins.[2]
The demonstration that SKAP1 regulates LFA-1 adhesion was made by retroviral infection [3] and by the SKAP1 deficient mouse.[4] Additional work has implicated SKAP1 in binding to the exchange factor RasGRP1 and in regulating ERK activation in T-cells.[5][6]
Interactions
SKAP1 has been shown to interact with FYN,[1][7][8] PTPRC[9] and FYB.[8][10]
References
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- ↑ Wang H, Liu H, Lu Y, Lovatt M, Wei, B, Rudd CE Functional defects of SKAP-55 deficient T-cells identify a regulatory role for the adaptor in LFA-1 adhesion, Mol. Cell. Biol. 2007 27, 6863-75.
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- ↑ Schneider H., Wang H., Raab M., Valk E., Smith X., Lovatt M., Wu Z., Strebhardt K, Rudd, CE. Adaptor SKAP55 binds RasGRP1 and negatively regulates p21ras and the ERK pathway in T-cells. (2008) PLoS ONE. 3, 1718.
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Further reading
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