Structural basis of Staphylococcus aureus Cas9 inhibition by AcrIIA14.
Structural basis of Staphylococcus aureus Cas9 inhibition by AcrIIA14.
复制标题
AcrIIA14 抑制金黄色葡萄球菌 Cas9 的结构基础。
DOI:
10.1093/nar/gkab487
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发表时间:
2021-06-21
影响因子:
14.9
通讯作者:
Huang Z
中科院分区:
文献类型:
--
作者:
Liu H;Zhu Y;Lu Z;Huang Z
Bacteriophages have evolved a range of anti-CRISPR proteins (Acrs) to escape the adaptive immune system of prokaryotes, therefore Acrs can be used as switches to regulate gene editing. Herein, we report the crystal structure of a quaternary complex of AcrIIA14 bound SauCas9–sgRNA–dsDNA at 2.22 Å resolution, revealing the molecular basis for AcrIIA14 recognition and inhibition. Our structural and biochemical data analysis suggest that AcrIIA14 binds to a non-conserved region of SauCas9 HNH domain that is distinctly different from AcrIIC1 and AcrIIC3, with no significant effect on sgRNA or dsDNA binding. Further, our structural data shows that the allostery of the HNH domain close to the substrate DNA is sterically prevented by AcrIIA14 binding. In addition, the binding of AcrIIA14 triggers the conformational allostery of the HNH domain and the L1 linker within the SauCas9, driving them to make new interactions with the target-guide heteroduplex, enhancing the inhibitory ability of AcrIIA14. Our research both expands the current understanding of anti-CRISPRs and provides additional culues for the rational use of the CRISPR-Cas system in genome editing and gene regulation.
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影响因子:
56.9
作者:
Jiang, Fuguo;Zhou, Kaihong;Doudna, Jennifer A.
通讯作者:
Doudna, Jennifer A.
影响因子:
64.5
作者:
Nishimasu H;Cong L;Yan WX;Ran FA;Zetsche B;Li Y;Kurabayashi A;Ishitani R;Zhang F;Nureki O
通讯作者:
Nureki O
影响因子:
16
作者:
Yang H;Patel DJ
通讯作者:
Patel DJ
影响因子:
16.8
作者:
Dong, Liyong;Guan, Xiaoyu;Huang, Zhiwei
通讯作者:
Huang, Zhiwei
影响因子:
48
作者:
Marino ND;Pinilla-Redondo R;Csörgő B;Bondy-Denomy J
通讯作者:
Bondy-Denomy J