CUL4B (Cullin 4B) is a Protein Coding gene. Diseases associated with CUL4B include Mental Retardation, X-Linked, Syndromic, Cabezas Type and Seizure Disorder. Among its related pathways are Mesodermal Commitment Pathway and Transcription-Coupled Nucleotide Excision Repair (TC-NER). Gene Ontology (GO) annotations related to this gene include ubiquitin protein ligase binding and damaged DNA binding. An important paralog of this gene is CUL4A.