A Guild of 45 CRISPR-Associated (Cas) Protein Families and Multiple CRISPR/Cas Subtypes Exist in Prokaryotic Genomes.

Daniel H. Haft Jeremy D. Selengut Emmanuel F. Mongodin Karen E. Nelson A Guild of 45 CRISPR-Associated (Cas) Protein Families and Multiple CRISPR/Cas Subtypes Exist in Prokaryotic Genomes. 2005 1 PLoS Computational Biology 6 http://dx.doi.org/10.1371/journal.pcbi.0010060 db/journals/ploscb/ploscb1.html#HaftSMN05