國家衛生研究院 NHRI:Item 3990099045/2245
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    題名: Identification of V23RalA-Ser(194) as a critical mediator for aurora-A-induced cellular motility and transformation by small pool expression screening
    作者: Wu, JC;Chen, TY;Yu, CTR;Tsai, SJ;Hsu, JM;Tang, MJ;Chou, CK;Lin, WJ;Yuan, CJ;Huang, CYF
    貢獻者: Division of Molecular and Genomic Medicine
    摘要: Human Aurora kinases have three gene family members: Aurora-A, Aurora-B, and Aurora-C. It is not yet established what the specificity of these kinases are and what signals relayed by their reactions. Therefore, we employed small pool expression screening to search for downstream substrates of Aurora-A. Interestingly, all of the identified Aurora-A substrates were resistant to serve as substrates for Aurora-B or Aurora-C, suggesting that these Aurora family members may have distinct substrate specificity for propagation of diverse signaling pathways, even though they share a conserved catalytic kinase domain. Of the candidate substrates, Aurora-A could increase the functional activity of RalA. Mutational analysis revealed that RalA-Ser(194) was the phosphorylation site for Aurora-A. Ectopic expression of V23RalA-WT could enhance collagen I-induced cell migration and anchorage-independent growth in Madin-Darby canine kidney (MDCK) Aurora-A stable cell lines. In contrast, overexpression of V23RalA-S194A in MDCK Aurora-Astable cell lines abolished the intrinsic migration and transformation abilities of Aurora-A. To our knowledge, this is the first systematic search for the downstream substrates of Aurora-A kinase. Moreover, these results support the notion that Aurora-A may act in concert with V23RalA through protein phosphorylation on Ser(194) to promote collagen I-induced cell motility and anchorage-independent growth in MDCK epithelial cells.
    關鍵詞: Biochemistry & Molecular Biology
    日期: 2005-03-11
    關聯: Journal of Biological Chemistry. 2005 Mar;280(10):9013-9022.
    Link to: http://dx.doi.org/10.1074/jbc.M411068200
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1083-351X&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000227453100048
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=20144373746
    顯示於類別:[黃奇英(1998-2005)] 期刊論文

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