CRISPR/Cas system-associated protein Cas3; Distinct diverged subfamily of Cas3 helicase domain
CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) and associated Cas proteins comprise a system for heritable host defense by prokaryotic cells against phage and other foreign DNA; Diverged DNA helicase Cas3'; signature gene for Type I and subtype I-D