DAXX envelops a histone H3.3-H4 dimer for H3.3-specific recognition.

DAXX envelops a histone H3.3-H4 dimer for H3.3-specific recognition.
复制标题

DOI:
10.1038/nature11608
复制
发表时间:
2012-11-22
期刊:
影响因子:
64.8
通讯作者:
Patel, Dinshaw J.
Patel, Dinshaw J.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Elsaesser, Simon J.;Huang, Hongda;Lewis, Peter W.;Chin, Jason W.;Allis, C. David;Patel, Dinshaw J.

文献摘要

参考文献

被引文献

相似文献

组蛋白伴侣蛋白是一个结构和功能多样的组蛋白结合蛋白家族,它能在组蛋白组装成染色质之前阻止组蛋白的混杂相互作用。DAXX是一种后生动物组蛋白伴侣,对进化上保守的组蛋白变体H3.3具有特异性。在这里,我们报告的DAXX组蛋白结合域与组蛋白H3.3-H4二聚体,包括DAXX和H3.3内的突变体的晶体结构,连同在体外和体内的功能研究,阐明H3.3识别特异性的原则。DAXX占据组蛋白表面可及区域的40%,包裹在H3.3-H4二聚体周围,复合物形成伴随着H3.3-H4组蛋白折叠中的结构转变。DAXX使用延伸的α-螺旋构象与主要的组蛋白间、DNA和ASF 1相互作用位点竞争。我们的结构研究确定识别元件,读出H3.3特异性残基,和功能研究解决的贡献,Gly 90在H3.3和Glu 225在DAXX分子伴侣介导的H3.3变体识别特异性。
Histone chaperones represent a structurally and functionally diverse family of histone-binding proteins that prevent promiscuous interactions of histones before their assembly into chromatin. DAXX is a metazoan histone chaperone specific to the evolutionarily conserved histone variant H3.3. Here we report the crystal structures of the DAXX histone-binding domain with a histone H3.3–H4 dimer, including mutants within DAXX and H3.3, together with in vitro and in vivo functional studies that elucidate the principles underlying H3.3 recognition specificity. Occupying 40% of the histone surface-accessible area, DAXX wraps around the H3.3–H4 dimer, with complex formation accompanied by structural transitions in the H3.3–H4 histone fold. DAXX uses an extended α-helical conformation to compete with major inter-histone, DNA and ASF1 interaction sites. Our structural studies identify recognition elements that read out H3.3-specific residues, and functional studies address the contributions of Gly 90 in H3.3 and Glu 225 in DAXX to chaperone-mediated H3.3 variant recognition specificity.
DOI: 10.1101/gad.566910
发表时间: 2010-06-15
影响因子: 10.5
作者:
Drane, Pascal;Ouararhni, Khalid;Hamiche, Ali
通讯作者: Hamiche, Ali
DOI: 10.1016/j.tibs.2010.04.001
发表时间: 2010-09
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.
DOI: 10.1016/j.cell.2010.01.003
发表时间: 2010-03-05
期刊: Cell
影响因子: 64.5
作者:
Goldberg AD;Banaszynski LA;Noh KM;Lewis PW;Elsaesser SJ;Stadler S;Dewell S;Law M;Guo X;Li X;Wen D;Chapgier A;DeKelver RC;Miller JC;Lee YL;Boydston EA;Holmes MC;Gregory PD;Greally JM;Rafii S;Yang C;Scambler PJ;Garrick D;Gibbons RJ;Higgs DR;Cristea IM;Urnov FD;Zheng D;Allis CD
通讯作者: Allis CD
DOI: 10.1107/s0907444904019158
发表时间: 2004-12-01
影响因子: 2.2
作者:
Emsley, P;Cowtan, K
通讯作者: Cowtan, K
DOI: 10.1038/nature05613
发表时间: 2007-03-15
期刊: NATURE
影响因子: 64.8
作者:
Natsume, Ryo;Eitoku, Masamitsu;Senda, Toshiya
通讯作者: Senda, Toshiya