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  • Title: Proteomic analysis reveals novel binding partners of MIP-T3 in human cells.
    Author: Guo CW, Xiong S, Liu G, Wang YF, He QY, Zhang XE, Zhang ZP, Ge F, Kitazato K.
    Journal: Proteomics; 2010 Jun; 10(12):2337-47. PubMed ID: 20391533.
    Abstract:
    MIP-T3 (microtubule-interacting protein associated with TRAF3) is a microtubule-interacting protein that evolutionarily conserved from worms to humans, but whose cellular functions remains unknown. To get insight into the functions of MIP-T3, we set out to identify MIP-T3 interacting proteins by immunoprecipitation in human embryonic kidney 293 cells and MS analysis. As the results, a total of 34 proteins were identified and most of them were novel MIP-T3 putative partners. The MIP-T3-associated proteins could be grouped into nine clusters based on their molecule functions, including cytoskeleton, chaperone, nucleic acid binding, kinase and so on. Three MIP-T3-interacted proteins - actin, HSPA8 and tubulin - were further confirmed by reciprocal coimmunoprecipitations and colocalization analysis. The interaction of MIP-T3 with both actin filaments and microtubule suggested that MIP-T3 may play an important role in regulation of cytoskeleton dynamics in cells. Our results therefore not only uncover a large number of MIP-T3-associated proteins that possess a variety of cellular functions, but also provide new research directions for the study of the functions of MIP-T3.
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