Dual recognition of CENP-A nucleosomes is required for centromere assembly.
Dual recognition of CENP-A nucleosomes is required for centromere assembly.
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DOI:
10.1083/jcb.201001013
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发表时间:
2010-06-28
期刊:
影响因子:
--
通讯作者:
Straight AF
中科院分区:
文献类型:
--
作者:
Carroll CW;Milks KJ;Straight AF
CENP-C and CENP-N recognize distinct structural elements of CENP-A nucleosomes, providing a foundation for the assembly of other centromere and kinetochore components. Centromeres contain specialized nucleosomes in which histone H3 is replaced by the histone variant centromere protein A (CENP-A). CENP-A nucleosomes are thought to act as an epigenetic mark that specifies centromere identity. We previously identified CENP-N as a CENP-A nucleosome-specific binding protein. Here, we show that CENP-C also binds directly and specifically to CENP-A nucleosomes. Nucleosome binding by CENP-C required the extreme C terminus of CENP-A and did not compete with CENP-N binding, which suggests that CENP-C and CENP-N recognize distinct structural elements of CENP-A nucleosomes. A mutation that disrupted CENP-C binding to CENP-A nucleosomes in vitro caused defects in CENP-C targeting to centromeres. Moreover, depletion of CENP-C with siRNA resulted in the mislocalization of all other nonhistone CENPs examined, including CENP-K, CENP-H, CENP-I, and CENP-T, and led to a partial reduction in centromeric CENP-A. We propose that CENP-C binds directly to CENP-A chromatin and, together with CENP-N, provides the foundation upon which other centromere and kinetochore proteins are assembled.
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影响因子:
21.3
作者:
Carroll, Christopher W.;Silva, Mariana C. C.;Godek, Kristina M.;Jansen, Lars E. T.;Straight, Aaron F.
通讯作者:
Straight, Aaron F.
DOI:
10.1038/nrm2718
发表时间:
2009-07
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
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影响因子:
10.5
作者:
Heeger, S;Leismann, O;Lehner, CF
通讯作者:
Lehner, CF
影响因子:
3.3
作者:
Cohen, R. L.;Espelin, C. W.;Simons, K. T.
通讯作者:
Simons, K. T.
影响因子:
11.4
作者:
Fukagawa, T;Mikami, Y;Ikemura, T
通讯作者:
Ikemura, T