NCIt definition : A DCX (DDB1-CUL4-X-box) ubiquitin protein ligase complex that is composed of protein
cereblon (CRBN), cullin-4A (CUL4A) or cullin-4B (CUL4B), DNA damage-binding protein
1 (DDB1) and E3 ubiquitin-protein ligase RBX1. This enzyme complex mediates the ubiquitination
and subsequent proteasomal degradation of target proteins. The CRBN moiety regulates
substrate recognition.;