CUL4B

Cancer-related genes, Disease related genes, Human disease related genes, Plasma proteins

Intracellular

Cell type enhanced (Late spermatids, Early spermatids)

Low immune cell specificity

Low cell line specificity

Component of multiple DCX (DDB1-CUL4-X-box) E3 ubiquitin-protein ligase complexes that seem to be formed of DDB1, CUL4A or CUL4B, RBX1 and a variable substrate recognition component which seems to belong to a protein family described as DCAF (Ddb1- and Cul4-associated factor) or CDW (CUL4-DDB1-associated WD40-repeat) proteins (PubMed:18593899, PubMed:10230407, PubMed:16678110, PubMed:17041588). Component of the DCX(DTL) complex with the putative substrate recognition component DTL (PubMed:17041588). Component of the DCX(DDB2) complex with the putative substrate recognition component DDB2 (PubMed:16678110). Component of DCX complexes part of the DesCEND (destruction via C-end degrons) pathway, which contain either TRPC4AP or DCAF12 as substrate-recognition component (PubMed:29779948). Component of the DCX(AMBRA1) complex with the substrate recognition component AMBRA1 (PubMed:30166453, PubMed:33854232, PubMed:33854239). Part of a complex with RBX1 and TIP120A/CAND1 (PubMed:12609982, PubMed:22118460). Interacts with RBX1, GRWD1, MLST8, SMU1, TLE2, TLE3, DCAF1, DDA1, DCAF6, DCAF17, DDB2, DCAF8, TIP120A/CAND1 and TMEM113 (PubMed:17041588, PubMed:16949367, PubMed:18235224). Interacts with cyclin E (CCNE1 or CCNE2) and with importins alpha-1 (KPNA2), alpha-3 (KPNA4), alpha-5 (KPNA1) and beta-1 (KPNB1) (PubMed:16322693, PubMed:19801544). May interact with WDR26, WDR51B, SNRNP40, WDR61, WDR76 and WDR5 (PubMed:17041588). Interacts (unneddylated form) with DCUN1D1, DCUN1D2, DCUN1D3, DCUN1D4 and DCUN1D5; these interactions promote the cullin neddylation (PubMed:23201271, PubMed:26906416).