Cryo-EM structure of the human Sirtuin 6-nucleosome complex.
Cryo-EM structure of the human Sirtuin 6-nucleosome complex.
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人类Sirtuin 6-核体复合物的冷冻EM结构。
DOI:
10.1126/sciadv.adf7586
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发表时间:
2023-04-14
期刊:
影响因子:
13.6
通讯作者:
Armache, Jean-Paul
中科院分区:
文献类型:
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作者:
Chio, Un Seng;Rechiche, Othman;Bryll, Alysia R.;Zhu, Jiang;Leith, Erik M.;Feldman, Jessica L.;Peterson, Craig L.;Tan, Song;Armache, Jean-Paul
Sirtuin 6 (SIRT6) is a multifaceted protein deacetylase/deacylase and a major target for small-molecule modulators of longevity and cancer. In the context of chromatin, SIRT6 removes acetyl groups from histone H3 in nucleosomes, but the molecular basis for its nucleosomal substrate preference is unknown. Our cryo–electron microscopy structure of human SIRT6 in complex with the nucleosome shows that the catalytic domain of SIRT6 pries DNA from the nucleosomal entry-exit site and exposes the histone H3 N-terminal helix, while the SIRT6 zinc-binding domain binds to the histone acidic patch using an arginine anchor. In addition, SIRT6 forms an inhibitory interaction with the C-terminal tail of histone H2A. The structure provides insights into how SIRT6 can deacetylate both H3 K9 and H3 K56. The structure of the SIRT6 deacetylase/nucleosome complex suggests how the enzyme acts on both histone H3 K9 and K56 residues.
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影响因子:
48
作者:
Kastner, Berthold;Fischer, Niels;Stark, Holger
通讯作者:
Stark, Holger
影响因子:
48
作者:
Li, Xueming;Mooney, Paul;Zheng, Shawn;Booth, Christopher R.;Braunfeld, Michael B.;Gubbens, Sander;Agard, David A.;Cheng, Yifan
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Cheng, Yifan
影响因子:
5.6
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通讯作者:
Widom, J
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16
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通讯作者:
Narlikar, Geeta J.
影响因子:
64.8
作者:
通讯作者:
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