XPB is a subunit of the basal transcription factor TFIIH , which is also involved in nucleotide excision repair ( NER ) and potentially in cell cycle regulation .
xpb is a subunit of the basal transcription factor tfiih , which is also involved in nucleotide excision repair ( ner ) and potentially in cell cycle regulation .
B-protein_subunit O O O O O O B-protein_family_or_group I-protein_family_or_group B-protein_molecule O O O O O O O O O O O O O O O O O O O