[Term] id: PR:000000013 name: cullin def: "A protein that has a core domain composition consisting of a cullin domain that functions as a molecular scaffold responsible for assembling the ROC1/Rbx1 RING-based E3 ubiquitin ligases." [PIRSF:PIRSF017874] comment: Category=family. xref: PIRSF:PIRSF017874 is_a: PR:000000001 ! protein