Molecular insights into Spindlin1-HBx interplay and its impact on HBV transcription from cccDNA minichromosome.
Molecular insights into Spindlin1-HBx interplay and its impact on HBV transcription from cccDNA minichromosome.
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Spindlin1-HBx 相互作用的分子洞察及其对 cccDNA 微型染色体 HBV 转录的影响
DOI:
10.1038/s41467-023-40225-w
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发表时间:
2023-08-03
影响因子:
16.6
通讯作者:
Li, Haitao
中科院分区:
文献类型:
--
作者:
Liu, Wei;Yao, Qiyan;Su, Xiaonan;Deng, Yafang;Yang, Mo;Peng, Bo;Zhao, Fan;Du, Chao;Zhang, Xiulan;Zhu, Jinsong;Wang, Daliang;Li, Wenhui;Li, Haitao
Molecular interplay between host epigenetic factors and viral proteins constitutes an intriguing mechanism for sustaining hepatitis B virus (HBV) life cycle and its chronic infection. HBV encodes a regulatory protein, HBx, which activates transcription and replication of HBV genome organized as covalently closed circular (ccc) DNA minichromosome. Here we illustrate how HBx accomplishes its task by hijacking Spindlin1, an epigenetic reader comprising three consecutive Tudor domains. Our biochemical and structural studies have revealed that the highly conserved N-terminal 2–21 segment of HBx (HBx2–21) associates intimately with Tudor 3 of Spindlin1, enhancing histone H3 “K4me3-K9me3” readout by Tudors 2 and 1. Functionally, Spindlin1-HBx engagement promotes gene expression from the chromatinized cccDNA, accompanied by an epigenetic switch from an H3K9me3-enriched repressive state to an H3K4me3-marked active state, as well as a conformational switch of HBx that may occur in coordination with other HBx-binding factors, such as DDB1. Despite a proposed transrepression activity of HBx2-21, our study reveals a key role of Spindlin1 in derepressing this conserved motif, thereby promoting HBV transcription from its chromatinized genome.
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影响因子:
64.8
作者:
Jumper J;Evans R;Pritzel A;Green T;Figurnov M;Ronneberger O;Tunyasuvunakool K;Bates R;Žídek A;Potapenko A;Bridgland A;Meyer C;Kohl SAA;Ballard AJ;Cowie A;Romera-Paredes B;Nikolov S;Jain R;Adler J;Back T;Petersen S;Reiman D;Clancy E;Zielinski M;Steinegger M;Pacholska M;Berghammer T;Bodenstein S;Silver D;Vinyals O;Senior AW;Kavukcuoglu K;Kohli P;Hassabis D
通讯作者:
Hassabis D
影响因子:
14.9
作者:
Hirai, Hayato;Takemata, Naomichi;Tamura, Miki;Ohta, Kunihiro
通讯作者:
Ohta, Kunihiro
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
影响因子:
5.4
作者:
Benhenda, Shirine;Ducroux, Aurelie;Neuveut, Christine
通讯作者:
Neuveut, Christine
影响因子:
5
作者:
Misra, KP;Mukherji, A;Kumar, V
通讯作者:
Kumar, V