Anti-CRISPR proteins function through thermodynamic tuning and allosteric regulation of CRISPR RNA-guided surveillance complex.
Anti-CRISPR proteins function through thermodynamic tuning and allosteric regulation of CRISPR RNA-guided surveillance complex.
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抗CRISPR蛋白通过CRISPR RNA引导的监视复合体的热力学调节和变构调节发挥作用。
DOI:
10.1093/nar/gkac841
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发表时间:
2022-10-28
影响因子:
14.9
通讯作者:
Bothner, Brian
中科院分区:
文献类型:
--
作者:
Patterson, Angela;White, Aidan;Waymire, Elizabeth;Fleck, Sophie;Golden, Sarah;Wilkinson, Royce A.;Wiedenheft, Blake;Bothner, Brian
CRISPR RNA-guided detection and degradation of foreign DNA is a dynamic process. Viruses can interfere with this cellular defense by expressing small proteins called anti-CRISPRs. While structural models of anti-CRISPRs bound to their target complex provide static snapshots that inform mechanism, the dynamics and thermodynamics of these interactions are often overlooked. Here, we use hydrogen deuterium exchange-mass spectrometry (HDX-MS) and differential scanning fluorimetry (DSF) experiments to determine how anti-CRISPR binding impacts the conformational landscape of the type IF CRISPR RNA guided surveillance complex (Csy) upon binding of two different anti-CRISPR proteins (AcrIF9 and AcrIF2). The results demonstrate that AcrIF2 binding relies on enthalpic stabilization, whereas AcrIF9 uses an entropy driven reaction to bind the CRISPR RNA-guided surveillance complex. Collectively, this work reveals the thermodynamic basis and mechanistic versatility of anti-CRISPR-mediated immune suppression. More broadly, this work presents a striking example of how allosteric effectors are employed to regulate nucleoprotein complexes.
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影响因子:
64.8
作者:
Bondy-Denomy J;Garcia B;Strum S;Du M;Rollins MF;Hidalgo-Reyes Y;Wiedenheft B;Maxwell KL;Davidson AR
通讯作者:
Davidson AR
DOI:
10.1073/pnas.96.18.10118
发表时间:
1999-08-31
影响因子:
11.1
作者:
Freire, E
通讯作者:
Freire, E
影响因子:
56.9
作者:
FRAUENFELDER, H;SLIGAR, SG;WOLYNES, PG
通讯作者:
WOLYNES, PG
影响因子:
3.2
作者:
Govindarajan, Sutharsan;Borges, Adair;Bondy-Denomy, Joseph
通讯作者:
Bondy-Denomy, Joseph
DOI:
10.1126/science.1159689
发表时间:
2008-08-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Brouns SJ;Jore MM;Lundgren M;Westra ER;Slijkhuis RJ;Snijders AP;Dickman MJ;Makarova KS;Koonin EV;van der Oost J
通讯作者:
van der Oost J