Structural analyses of the chromatin remodelling enzymes INO80-C and SWR-C.
Structural analyses of the chromatin remodelling enzymes INO80-C and SWR-C.
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DOI:
10.1038/ncomms8108
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发表时间:
2015-05-12
影响因子:
16.6
通讯作者:
Peterson, Craig L.
中科院分区:
文献类型:
--
作者:
Watanabe, Shinya;Tan, Dongyan;Lakshminarasimhan, Mahadevan;Washburn, Michael P.;Hong, Eun-Jin Erica;Walz, Thomas;Peterson, Craig L.
INO80-C and SWR-C are conserved members of a subfamily of ATP-dependent chromatin remodeling enzymes that function in transcription and genome-maintenance pathways. A crucial role for these enzymes is to control chromosomal distribution of the H2A.Z histone variant. Here we use electron microscopy (EM) and two-dimensional (2D) class averaging to demonstrate that these remodeling enzymes have similar overall architectures. Each enzyme is characterized by a dynamic ‘tail’ domain and a compact ‘head’ that contains Rvb1/Rvb2 subunits organized as hexameric rings. EM class averages and mass spectrometry support the existence of single heterohexameric rings in both SWR-C and INO80-C. EM studies define the position of the Arp8/Arp4/Act1 module within INO80-C, and we find that this module enhances nucleosome binding affinity but is largely dispensable for remodeling activities. In contrast, the Ies6/Arp5 module is essential for INO80-C remodeling, and furthermore this module controls conformational changes that may couple nucleosome binding to remodeling.
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影响因子:
64.8
作者:
Bottcher, B;Wynne, SA;Crowther, RA
通讯作者:
Crowther, RA
影响因子:
5.3
作者:
Gelbart, ME;Rechsteiner, T;Tsukiyama, T
通讯作者:
Tsukiyama, T
影响因子:
16
作者:
Grüne, T;Brzeski, J;Müller, CW
通讯作者:
Müller, CW
影响因子:
14.9
作者:
Gerhold CB;Winkler DD;Lakomek K;Seifert FU;Fenn S;Kessler B;Witte G;Luger K;Hopfner KP
通讯作者:
Hopfner KP
DOI:
10.1093/jmicro/dfp036
发表时间:
2010-02-01
期刊:
JOURNAL OF ELECTRON MICROSCOPY
影响因子:
--
作者:
Li, Zongli;Hite, Richard K.;Walz, Thomas
通讯作者:
Walz, Thomas