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Structural characterization of CAS SH3 domain selectivity and regulation reveals new CAS interaction partners

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    0478474 - ÚOCHB 2018 RIV GB eng J - Journal Article
    Gemperle, J. - Hexnerová, Rozálie - Lepšík, Martin - Těšina, Petr - Dibus, M. - Novotný, M. - Brábek, J. - Veverka, Václav - Rösel, D.
    Structural characterization of CAS SH3 domain selectivity and regulation reveals new CAS interaction partners.
    Scientific Reports. Roč. 7, Aug 14 (2017), č. článku 8057. ISSN 2045-2322. E-ISSN 2045-2322
    R&D Projects: GA ČR(CZ) GBP208/12/G016; GA MŠk(CZ) LO1304
    Institutional support: RVO:61388963
    Keywords : focal adhesion kinase * Src-transformed cells * tyrosine phosphorylation
    OECD category: Biochemistry and molecular biology
    Impact factor: 4.122, year: 2017
    https://www.nature.com/articles/s41598-017-08303-4

    CAS is a docking protein downstream of the proto-oncogene Src with a role in invasion and metastasis of cancer cells. The CAS SH3 domain is indispensable for CAS-mediated signaling, but structural aspects of CAS SH3 ligand binding and regulation are not well understood. Here, we identified the consensus CAS SH3 binding motif and structurally characterized the CAS SH3 domain in complex with ligand. We revealed the requirement for an uncommon centrally localized lysine residue at position +2 of CAS SH3 ligands and two rather dissimilar optional anchoring residues, leucine and arginine, at position +5. We further expanded the knowledge of CAS SH3 ligand binding regulation by manipulating tyrosine 12 phosphorylation and confirmed the negative role of this phosphorylation on CAS SH3 ligand binding. Finally, by exploiting the newly identified binding requirements of the CAS SH3 domain, we predicted and experimentally verified two novel CAS SH3 binding partners, DOK7 and GLIS2.
    Permanent Link: http://hdl.handle.net/11104/0274626

     
     
Number of the records: 1