An updated evolutionary classification of CRISPR–Cas systemsKira S. Makarova, Eugene V. Koonin, Yuri I. Wolf et al.|Nature Reviews Microbiology|2015Cited by 2.6k
Evolution and classification of the CRISPR–Cas systemsKira S. Makarova, Eugene V. Koonin, Daniel H. Haft et al.|Nature Reviews Microbiology|2011Cited by 2.5k
Evolutionary classification of CRISPR–Cas systems: a burst of class 2 and derived variantsKira S. Makarova, Eugene V. Koonin, Yuri I. Wolf et al.|Nature Reviews Microbiology|2019Cited by 2.5k
A comprehensive evolutionary classification of proteins encoded in complete eukaryotic genomesEugene V. Koonin, Darren A. Natale|Genome biology|2004Cited by 1.1k
Genomics of bacteria and archaea: the emerging dynamic view of the prokaryotic worldEugene V. Koonin, Yuri I. Wolf|Nucleic Acids Research|2008Cited by 789