Therefore , the C - terminus of CUL4B - along with RBX1 and activated E2 enzymes - compose the catalytic core of CRL4B complexes .
RBX1 is a core component of Cullin - RING ubiquitin ligase ( CRL ) complexes and functions to recruit E2 ubiquitin conjugating enzymes .
The C - terminus of CUL4B - along with component and activated E2 enzymes - compose the catalytic core of CRL4B complexes .
RBX1 is a core component of Cullin - RING ubiquitin ligase ( CRL ) complexes and functions to recruit E2 ubiquitin conjugating enzymes .