# OC Root 2nd 3rd 4th PC Gene/Definition OC.309165 Bacteria.403751 Proteobacteria.76216 Gammaproteobacteria.215443 mca.884 mca:MCA0936 CRISPR-associated helicase Cas3; K07012 CRISPR-associated endonuclease/helicase Cas3 [EC:3.1.-.- 3.6.4.-]