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At the centromere, a network of proteins, the kinetochore, assembles in order to grant correct chromatin segregation. In this study the dynamics and molecular interactions of the inner kinetochore protein CENP‐T were analyzed employing a variety of fluorescence microscopy techniques in living human cells. Acceptor‐bleaching FRET indicates that CENP‐T directly associates with CENP‐A and CENP‐B. CENP‐T exchange into centromeres is restricted to the S‐phase of the cell cycle as revealed by FRAP, suggesting a coreplicational loading mechanism, as we have recently also demonstrated for CENP‐I. These properties make CENP‐T one of the basic inner kinetochore proteins with most further proteins binding downstream, suggesting a fundamental role of CENP‐T in kinetochore function. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)  相似文献   

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