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Title: Protospacer Adjacent Motif-Induced Allostery Activates CRISPR-Cas9

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.7b05313· OSTI ID:1489021

CRISPR-Cas9 is a genome editing technology with major impact in life sciences. In this system, the endonuclease Cas9 generates double strand breaks in DNA upon RNA-guided recognition of a complementary DNA sequence, which strictly requires the presence of a protospacer adjacent motif (PAM) next to the target site. Although PAM recognition is essential for cleavage, it is unknown whether and how PAM binding activates Cas9 for DNA cleavage at spatially distant sites. Here, we find evidence of a PAM-induced allosteric mechanism revealed by microsecond molecular dynamics simulations. PAM acts as an allosteric effector and triggers the interdependent conformational dynamics of the Cas9 catalytic domains (HNH and RuvC), responsible for concerted cleavage of the two DNA strands. As a result, targeting such an allosteric mechanism should enable control of CRISPR-Cas9 functionality.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
OSTI ID:
1489021
Journal Information:
Journal of the American Chemical Society, Vol. 139, Issue 45; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 73 works
Citation information provided by
Web of Science

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Cited By (12)

Mechanism of allosteric activation of human mRNA cap methyltransferase (RNMT) by RAM: insights from accelerated molecular dynamics simulations journal July 2019
Dynamics changes of CRISPR-Cas9 systems induced by high fidelity mutations journal January 2018
Eigenvector centrality for characterization of protein allosteric pathways journal December 2018
1H, 13C, 15N backbone and side chain resonance assignment of the HNH nuclease from Streptococcus pyogenes CRISPR-Cas9 journal August 2019
Future of human mitochondrial DNA editing technologies journal May 2018
Key role of the REC lobe during CRISPR–Cas9 activation by ‘sensing’, ‘regulating’, and ‘locking’ the catalytic HNH domain journal January 2018
All-atom simulations disentangle the functional dynamics underlying gene maturation in the intron lariat spliceosome journal June 2018
Liposome-based transfection enhances RNAi and CRISPR-mediated mutagenesis in non-model nematode systems journal January 2019
NMR and computational methods for molecular resolution of allosteric pathways in enzyme complexes journal December 2019
PAM identification by CRISPR-Cas effector complexes: diversified mechanisms and structures journal September 2018
Allostery in Its Many Disguises: From Theory to Applications journal April 2019
Disclosing the Impact of Carcinogenic SF3b Mutations on Pre-mRNA Recognition Via All-Atom Simulations journal October 2019

Figures / Tables (3)


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