The function of Ensembl gene identifier ENSG00000139990 (DCAF5, DDB1 and CUL4 associated factor 5) is as follows. Is a substrate receptor for the CUL4-DDB1 E3 ubiquitin- protein ligase complex (CRL4) (PubMed:29691401, PubMed:30442713). The complex CRL4-DCAF5 is involved in the ubiquitination of a set of methylated non-histone proteins, including SOX2, DNMT1 and E2F1 (PubMed:29691401, PubMed:30442713). {ECO:0000269|PubMed:16949367, ECO:0000269|PubMed:16964240, ECO:0000269|PubMed:29691401, ECO:0000269|PubMed:30442713}.