Crystal Structure of Cas9 in Complex with Guide RNA and Target DNA
Overview
Authors
Affiliations
The CRISPR-associated endonuclease Cas9 can be targeted to specific genomic loci by single guide RNAs (sgRNAs). Here, we report the crystal structure of Streptococcus pyogenes Cas9 in complex with sgRNA and its target DNA at 2.5 Å resolution. The structure revealed a bilobed architecture composed of target recognition and nuclease lobes, accommodating the sgRNA:DNA heteroduplex in a positively charged groove at their interface. Whereas the recognition lobe is essential for binding sgRNA and DNA, the nuclease lobe contains the HNH and RuvC nuclease domains, which are properly positioned for cleavage of the complementary and noncomplementary strands of the target DNA, respectively. The nuclease lobe also contains a carboxyl-terminal domain responsible for the interaction with the protospacer adjacent motif (PAM). This high-resolution structure and accompanying functional analyses have revealed the molecular mechanism of RNA-guided DNA targeting by Cas9, thus paving the way for the rational design of new, versatile genome-editing technologies.
Insights into the compact CRISPR-Cas9d system.
Yang J, Wang T, Huang Y, Long Z, Li X, Zhang S Nat Commun. 2025; 16(1):2462.
PMID: 40075056 PMC: 11903963. DOI: 10.1038/s41467-025-57455-9.
CRISPR-Cas applications in agriculture and plant research.
Tuncel A, Pan C, Clem J, Liu D, Qi Y Nat Rev Mol Cell Biol. 2025; .
PMID: 40055491 DOI: 10.1038/s41580-025-00834-3.
CRISPR/Cas9-mediated efficient PlCYP81Q38 mutagenesis in Phryma leptostachya.
Pei Y, Cao W, Kong X, Wang S, Sun Z, Zuo Y Planta. 2025; 261(4):73.
PMID: 40029441 DOI: 10.1007/s00425-025-04657-6.
Improving adenine base editing precision by enlarging the recognition domain of CRISPR-Cas9.
Gao S, Weng B, Wich D, Power L, Chen M, Guan H Nat Commun. 2025; 16(1):2081.
PMID: 40021632 PMC: 11871365. DOI: 10.1038/s41467-025-57154-5.
Shu H, Luan A, Ullah H, He J, Wang Y, Chen C Genes (Basel). 2025; 16(2).
PMID: 40004545 PMC: 11855603. DOI: 10.3390/genes16020217.