A 3' --> 5' XPB helicase defect in repair/transcription factor TFIIH of xeroderma pigmentosum group B affects both DNA repair and transcription .
a 3' --> 5' xpb helicase defect in repair/transcription factor tfiih of xeroderma pigmentosum group b affects both dna repair and transcription .
O O O O B-protein_family_or_group I-protein_family_or_group O O B-protein_family_or_group I-protein_family_or_group B-protein_molecule O O O O O O O B-other_name I-other_name O B-other_name O