Predicted to enable several functions, including 5'-3' DNA helicase activity; protein C-terminus binding activity; and protein N-terminus binding activity. Involved in embryonic organ development and response to hypoxia. Part of transcription factor TFIIH core complex. Biomarker of asphyxia neonatorum. Human ortholog(s) of this gene implicated in several diseases, including acoustic neuroma; acquired immunodeficiency syndrome; carcinoma (multiple); hematologic cancer (multiple); and xeroderma pigmentosum (multiple). Orthologous to human ERCC2 (ERCC excision repair 2, TFIIH core complex helicase subunit). [provided by Alliance of Genome Resources, Apr 2022]