The histone chaperones Nap1 and Vps75 bind histones H3 and H4 in a tetrameric conformation.
The histone chaperones Nap1 and Vps75 bind histones H3 and H4 in a tetrameric conformation.
复制标题
DOI:
10.1016/j.molcel.2011.01.025
复制
发表时间:
2011-02-18
期刊:
影响因子:
16
通讯作者:
Owen-Hughes T
中科院分区:
文献类型:
--
作者:
Bowman A;Ward R;Wiechens N;Singh V;El-Mkami H;Norman DG;Owen-Hughes T
Histone chaperones physically interact with histones to direct proper assembly and disassembly of nucleosomes regulating diverse nuclear processes such as DNA replication, promoter remodeling, transcription elongation, DNA damage, and histone variant exchange. Currently, the best-characterized chaperone-histone interaction is that between the ubiquitous chaperone Asf1 and a dimer of H3 and H4. Nucleosome assembly proteins (Nap proteins) represent a distinct class of histone chaperone. Using pulsed electron double resonance (PELDOR) measurements and protein crosslinking, we show that two members of this class, Nap1 and Vps75, bind histones in the tetrameric conformation also observed when they are sequestered within the nucleosome. Furthermore, H3 and H4 trapped in their tetrameric state can be used as substrates in nucleosome assembly and chaperone-mediated lysine acetylation. This alternate mode of histone interaction provides a potential means of maintaining the integrity of the histone tetramer during cycles of nucleosome reassembly. ► Site-specific crosslinking of H3 shows Nap proteins bind a tetramer of H3 and H4 ► Tetrameric conformation confirmed by EPR measurements and in vivo crosslinking ► Nap1 can deposit a whole (H3-H4)2 tetramer onto DNA ► Vps75-Rtt109 preferentially acetylates tetrameric H3 and H4
登录
查看更多内容
影响因子:
14.9
作者:
Bowman A;Ward R;El-Mkami H;Owen-Hughes T;Norman DG
通讯作者:
Norman DG
影响因子:
64.8
作者:
LASKEY, RA;HONDA, BM;FINCH, JT
通讯作者:
FINCH, JT
影响因子:
13.8
作者:
Das, Chandrima;Tyler, Jessica K.;Churchill, Mair E. A.
通讯作者:
Churchill, Mair E. A.
影响因子:
64.8
作者:
Natsume, Ryo;Eitoku, Masamitsu;Senda, Toshiya
通讯作者:
Senda, Toshiya
影响因子:
5.3
作者:
Fillingham, Jeffrey;Recht, Judith;Greenblatt, Jack F.
通讯作者:
Greenblatt, Jack F.