1u5d is a 4 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
[SKAP1_HUMAN] Positively regulates T-cell receptor signaling by enhancing the MAP kinase pathway. Required for optimal conjugation between T-cells and antigen-presenting cells by promoting the clustering of integrin ITGAL on the surface of T-cells. May be involved in high affinity immunoglobulin epsilon receptor signaling in mast cells.[1][2][3][4][5]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
References
↑Kang H, Freund C, Duke-Cohan JS, Musacchio A, Wagner G, Rudd CE. SH3 domain recognition of a proline-independent tyrosine-based RKxxYxxY motif in immune cell adaptor SKAP55. EMBO J. 2000 Jun 15;19(12):2889-99. PMID:10856234 doi:https://dx.doi.org/10.1093/emboj/19.12.2889
↑Wang H, Moon EY, Azouz A, Wu X, Smith A, Schneider H, Hogg N, Rudd CE. SKAP-55 regulates integrin adhesion and formation of T cell-APC conjugates. Nat Immunol. 2003 Apr;4(4):366-74. Epub 2003 Mar 24. PMID:12652296 doi:https://dx.doi.org/10.1038/ni913
↑Jo EK, Wang H, Rudd CE. An essential role for SKAP-55 in LFA-1 clustering on T cells that cannot be substituted by SKAP-55R. J Exp Med. 2005 Jun 6;201(11):1733-9. PMID:15939789 doi:https://dx.doi.org/10.1084/jem.20042577
↑Kliche S, Breitling D, Togni M, Pusch R, Heuer K, Wang X, Freund C, Kasirer-Friede A, Menasche G, Koretzky GA, Schraven B. The ADAP/SKAP55 signaling module regulates T-cell receptor-mediated integrin activation through plasma membrane targeting of Rap1. Mol Cell Biol. 2006 Oct;26(19):7130-44. PMID:16980616 doi:https://dx.doi.org/26/19/7130
