Ccp1 Homodimer Mediates Chromatin Integrity by Antagonizing CENP-A Loading.
Ccp1 Homodimer Mediates Chromatin Integrity by Antagonizing CENP-A Loading.
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DOI:
10.1016/j.molcel.2016.08.022
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发表时间:
2016-10-06
期刊:
影响因子:
16
通讯作者:
Li, Fei
中科院分区:
文献类型:
--
作者:
Dong, Qianhua;Yin, Feng-Xiang;Gao, Feng;Shen, Yuan;Zhang, Faben;Li, Yang;He, Haijin;Gonzalez, Marlyn;Yang, Jinpu;Zhang, Shu;Su, Min;Chen, Yu-Hang;Li, Fei
CENP-A is a centromere-specific histone 3 variant essential for centromere specification. CENP-A partially replaces canonical histone H3 at the centromeres. How the particular CENP-A/H3 ratio at centromeres is precisely maintained is unknown. It also remains unclear how CENP-A is excluded from non-centromeric chromatin. Here we identify Ccp1, an uncharacterized NAP family protein in fission yeast that antagonizes CENP-A loading at both centromeric and non-centromeric regions. Like the CENP-A loading factor HJURP, Ccp1 interacts with CENP-A, and is recruited to centromeres at the end of mitosis in a Mis16-dependent manner. These data indicate that factors with opposing CENP-A loading activities are recruited to centromeres. Furthermore, Ccp1 also cooperates with H2A.Z to evict CENP-A assembled in euchromatin. Structural analyses indicate that Ccp1 forms a homodimer that is required for its anti-CENP-A loading activity. Our study establishes mechanisms for maintenance of CENP-A homeostasis at centromeres and the prevention of ectopic assembly of centromeres.
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影响因子:
11.8
作者:
Chen, Chin-Chi;Bowers, Sarion;Lipinszki, Zoltan;Palladino, Jason;Trusiak, Sarah;Bettini, Emily;Rosin, Leah;Przewloka, Marcin R.;Glover, David M.;O'Neill, Rachel J.;Mellone, Barbara G.
通讯作者:
Mellone, Barbara G.
影响因子:
5.3
作者:
COTTAREL, G;SHERO, JH;HEGEMANN, JH
通讯作者:
HEGEMANN, JH
影响因子:
16
作者:
Chen, ES;Saitoh, S;Takahashi, K
通讯作者:
Takahashi, K
影响因子:
10.5
作者:
Deyter GM;Biggins S
通讯作者:
Biggins S
影响因子:
64.5
作者:
Black BE;Cleveland DW
通讯作者:
Cleveland DW