• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利:CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验

伴侣蛋白 Nap1 保护核小体中使用的组蛋白表面,并能使 H2A-H2B 形成非传统的四聚体形式。

Chaperone Nap1 shields histone surfaces used in a nucleosome and can put H2A-H2B in an unconventional tetrameric form.

机构信息

Howard Hughes Medical Institute, Colorado State University, Fort Collins, CO 80523, USA.

出版信息

Mol Cell. 2013 Sep 12;51(5):662-77. doi: 10.1016/j.molcel.2013.07.015. Epub 2013 Aug 22.

DOI:10.1016/j.molcel.2013.07.015
PMID:23973327
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3878309/
Abstract

The histone H2A-H2B heterodimer is an integral component of the nucleosome. The cellular localization and deposition of H2A-H2B into chromatin is regulated by numerous factors, including histone chaperones such as nucleosome assembly protein 1 (Nap1). We use hydrogen-deuterium exchange coupled to mass spectrometry to characterize H2A-H2B and Nap1. Unexpectedly, we find that at low ionic strength, the α helices in H2A-H2B are frequently sampling partially disordered conformations and that binding to Nap1 reduces this conformational sampling. We identify the interaction surface between H2A-H2B and Nap1 and confirm its relevance both in vitro and in vivo. We show that two copies of H2A-H2B bound to a Nap1 homodimer form a tetramer with contacts between H2B chains similar to those in the four-helix bundle structural motif. The organization of the complex reveals that Nap1 competes with histone-DNA and interhistone interactions observed in the nucleosome, thereby regulating the availability of histones for chromatin assembly.

摘要

组蛋白 H2A-H2B 异二聚体是核小体的一个组成部分。细胞内 H2A-H2B 定位于染色质和向染色质中沉积的过程受到许多因素的调控,包括核小体装配蛋白 1(Nap1)等组蛋白伴侣。我们使用氢氘交换结合质谱的方法来对 H2A-H2B 和 Nap1 进行分析。出人意料的是,我们发现,在低盐浓度下,H2A-H2B 的 α 螺旋经常呈现部分无序构象,而与 Nap1 结合则会减少这种构象的采样。我们确定了 H2A-H2B 与 Nap1 之间的相互作用表面,并通过体内和体外实验证实了其相关性。我们发现,两个 H2A-H2B 与一个 Nap1 同源二聚体结合形成四聚体,H2B 链之间的接触类似于四螺旋束结构基序。该复合物的结构揭示了 Nap1 与核小体中观察到的组蛋白-DNA 和组间相互作用竞争,从而调节组蛋白用于染色质组装的可用性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/67adca8e0f7d/nihms525279f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/0094ae049899/nihms525279f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/e3079fc7b41e/nihms525279f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/e8a2f23a29aa/nihms525279f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/5cb7beb74a09/nihms525279f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/6de28f66332d/nihms525279f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/c762b75539dd/nihms525279f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/67adca8e0f7d/nihms525279f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/0094ae049899/nihms525279f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/e3079fc7b41e/nihms525279f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/e8a2f23a29aa/nihms525279f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/5cb7beb74a09/nihms525279f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/6de28f66332d/nihms525279f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/c762b75539dd/nihms525279f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/69e9/3878309/67adca8e0f7d/nihms525279f7.jpg

相似文献

1
Chaperone Nap1 shields histone surfaces used in a nucleosome and can put H2A-H2B in an unconventional tetrameric form.伴侣蛋白 Nap1 保护核小体中使用的组蛋白表面,并能使 H2A-H2B 形成非传统的四聚体形式。
Mol Cell. 2013 Sep 12;51(5):662-77. doi: 10.1016/j.molcel.2013.07.015. Epub 2013 Aug 22.
2
Structural evidence for Nap1-dependent H2A-H2B deposition and nucleosome assembly.Nap1 依赖性 H2A-H2B 沉积和核小体组装的结构证据。
EMBO J. 2016 Jul 1;35(13):1465-82. doi: 10.15252/embj.201694105. Epub 2016 May 25.
3
Distinct roles for histone chaperones in the deposition of Htz1 in chromatin.组蛋白伴侣在Htz1于染色质中沉积过程中的不同作用。
Biosci Rep. 2014 Sep 19;34(5):e00139. doi: 10.1042/BSR20140092.
4
Histone Chaperone Nap1 Is a Major Regulator of Histone H2A-H2B Dynamics at the Inducible GAL Locus.组蛋白伴侣Nap1是诱导型GAL基因座处组蛋白H2A-H2B动态变化的主要调节因子。
Mol Cell Biol. 2016 Mar 31;36(8):1287-96. doi: 10.1128/MCB.00835-15. Print 2016 Apr.
5
Residues in the Nucleosome Acidic Patch Regulate Histone Occupancy and Are Important for FACT Binding in .核小体酸性斑块中的残基调节组蛋白占据情况,并且对FACT在……中的结合很重要。
Genetics. 2017 Jul;206(3):1339-1348. doi: 10.1534/genetics.117.201939. Epub 2017 May 3.
6
Coordinated Action of Nap1 and RSC in Disassembly of Tandem Nucleosomes.Nap1和RSC在串联核小体解聚中的协同作用。
Mol Cell Biol. 2016 Aug 12;36(17):2262-71. doi: 10.1128/MCB.00195-16. Print 2016 Sep 1.
7
Histone chaperone Nap1 dismantles an H2A/H2B dimer from a partially unwrapped nucleosome.组蛋白伴侣 Nap1 从部分展开的核小体中拆除 H2A/H2B 二聚体。
Nucleic Acids Res. 2023 Jun 23;51(11):5351-5363. doi: 10.1093/nar/gkad396.
8
Redundant Functions for Nap1 and Chz1 in H2A.Z Deposition.Nap1 和 Chz1 在 H2A.Z 沉积中的冗余功能。
Sci Rep. 2017 Sep 7;7(1):10791. doi: 10.1038/s41598-017-11003-8.
9
Structural Insights into ceNAP1 Chaperoning Activity toward ceH2A-H2B.核小体组装蛋白 1 介导核小体核心组蛋白 H2A-H2B 组装的结构基础
Structure. 2019 Dec 3;27(12):1798-1810.e3. doi: 10.1016/j.str.2019.10.002. Epub 2019 Oct 22.
10
The intrinsic stability of H2B-ubiquitylated nucleosomes and their in vitro assembly/disassembly by histone chaperone NAP1.H2B 泛素化核小体的固有稳定性及其组蛋白伴侣 NAP1 在体外的组装/拆卸。
Biochim Biophys Acta Gen Subj. 2020 Mar;1864(3):129497. doi: 10.1016/j.bbagen.2019.129497. Epub 2019 Nov 27.

引用本文的文献

1
Roles of histone chaperone Nap1 and histone acetylation in regulating phase-separation of chromatin arrays.组蛋白伴侣Nap1和组蛋白乙酰化在调节染色质阵列相分离中的作用。
bioRxiv. 2025 May 15:2025.05.09.653121. doi: 10.1101/2025.05.09.653121.
2
Always on the Move: Overview on Chromatin Dynamics within Nuclear Processes.永不停歇:核过程中染色质动力学概述
Biochemistry. 2025 May 20;64(10):2138-2153. doi: 10.1021/acs.biochem.5c00114. Epub 2025 May 1.
3
Glutamylation of Npm2 and Nap1 acidic disordered regions increases DNA mimicry and histone chaperone efficiency.

本文引用的文献

1
Towards a mechanism for histone chaperones.探索组蛋白伴侣的作用机制。
Biochim Biophys Acta. 2013 Mar-Apr;1819(3-4):211-221. doi: 10.1016/j.bbagrm.2011.07.007.
2
Structural basis of histone H2A-H2B recognition by the essential chaperone FACT.组蛋白 H2A-H2B 被必需伴侣因子 FACT 识别的结构基础。
Nature. 2013 Jul 4;499(7456):111-4. doi: 10.1038/nature12242. Epub 2013 May 22.
3
Histone chaperones Nap1 and Vps75 regulate histone acetylation during transcription elongation.组蛋白伴侣 Nap1 和 Vps75 在转录延伸过程中调节组蛋白乙酰化。
Npm2和Nap1酸性无序区域的谷氨酰化增加了DNA模拟和组蛋白伴侣效率。
iScience. 2024 Mar 8;27(4):109458. doi: 10.1016/j.isci.2024.109458. eCollection 2024 Apr 19.
4
Molecular basis of RanGTP-activated release of Histones H2A-H2B from Importin-9.RanGTP 激活 Importin-9 释放组蛋白 H2A-H2B 的分子基础。
Structure. 2023 Aug 3;31(8):903-911.e3. doi: 10.1016/j.str.2023.06.001. Epub 2023 Jun 27.
5
Histone chaperone Nap1 dismantles an H2A/H2B dimer from a partially unwrapped nucleosome.组蛋白伴侣 Nap1 从部分展开的核小体中拆除 H2A/H2B 二聚体。
Nucleic Acids Res. 2023 Jun 23;51(11):5351-5363. doi: 10.1093/nar/gkad396.
6
Molecular basis of RanGTP-activated nucleosome assembly with Histones H2A-H2B bound to Importin-9.RanGTP激活的核小体组装的分子基础,其中组蛋白H2A - H2B与输入蛋白9结合。
bioRxiv. 2023 Jan 28:2023.01.27.525896. doi: 10.1101/2023.01.27.525896.
7
Profile of Karolin Luger.卡罗琳·卢格简介。
Proc Natl Acad Sci U S A. 2022 Aug 23;119(34):e2212317119. doi: 10.1073/pnas.2212317119. Epub 2022 Aug 8.
8
Structural comparisons reveal diverse binding modes between nucleosome assembly proteins and histones.结构比较揭示了核小体组装蛋白与组蛋白之间的多种结合模式。
Epigenetics Chromatin. 2022 May 24;15(1):20. doi: 10.1186/s13072-022-00452-9.
9
NAP1-Related Protein 1 (NRP1) has multiple interaction modes for chaperoning histones H2A-H2B.NAP1 相关蛋白 1(NRP1)有多种与组蛋白 H2A-H2B 伴侣的相互作用模式。
Proc Natl Acad Sci U S A. 2020 Dec 1;117(48):30391-30399. doi: 10.1073/pnas.2011089117. Epub 2020 Nov 16.
10
OsChz1 acts as a histone chaperone in modulating chromatin organization and genome function in rice.OsChz1 在调节水稻染色质结构和基因组功能中作为组蛋白伴侣发挥作用。
Nat Commun. 2020 Nov 11;11(1):5717. doi: 10.1038/s41467-020-19586-z.
Mol Cell Biol. 2013 Apr;33(8):1645-56. doi: 10.1128/MCB.01121-12. Epub 2013 Feb 11.
4
Identification of functionally conserved regions in the structure of the chaperone/CenH3/H4 complex.鉴定伴侣蛋白/CenH3/H4 复合物结构中具有功能保守性的区域。
J Mol Biol. 2013 Feb 8;425(3):536-45. doi: 10.1016/j.jmb.2012.11.021. Epub 2012 Nov 23.
5
Structure of the variant histone H3.3-H4 heterodimer in complex with its chaperone DAXX.变体组蛋白 H3.3-H4 异二聚体与它的伴侣蛋白 DAXX 的复合物结构。
Nat Struct Mol Biol. 2012 Dec;19(12):1287-92. doi: 10.1038/nsmb.2439. Epub 2012 Nov 11.
6
DAXX envelops a histone H3.3-H4 dimer for H3.3-specific recognition.DAXX 包裹组蛋白 H3.3-H4 二聚体,以实现 H3.3 特异性识别。
Nature. 2012 Nov 22;491(7425):560-5. doi: 10.1038/nature11608. Epub 2012 Oct 17.
7
Yeast CAF-1 assembles histone (H3-H4)2 tetramers prior to DNA deposition.酵母 CAF-1 在 DNA 沉积之前组装组蛋白 (H3-H4)2 四聚体。
Nucleic Acids Res. 2012 Nov 1;40(20):10139-49. doi: 10.1093/nar/gks812. Epub 2012 Aug 31.
8
HJURP uses distinct CENP-A surfaces to recognize and to stabilize CENP-A/histone H4 for centromere assembly.HJURP 使用独特的 CENP-A 表面来识别和稳定 CENP-A/组蛋白 H4,以进行着丝粒组装。
Dev Cell. 2012 Apr 17;22(4):749-62. doi: 10.1016/j.devcel.2012.02.001. Epub 2012 Mar 8.
9
Fluorescence strategies for high-throughput quantification of protein interactions.荧光策略用于高通量定量蛋白质相互作用。
Nucleic Acids Res. 2012 Mar;40(5):e33. doi: 10.1093/nar/gkr1045. Epub 2011 Nov 24.
10
ExMS: data analysis for HX-MS experiments.ExMS:用于 HX-MS 实验的数据分析。
J Am Soc Mass Spectrom. 2011 Nov;22(11):1906-15. doi: 10.1007/s13361-011-0236-3. Epub 2011 Sep 15.