Oct-1 , a POU domain transcription factor , was identified as a repressor of HLA-DRA promoter activity in the Rb-defective cells .
oct-1 , a pou domain transcription factor , was identified as a repressor of hla-dra promoter activity in the rb-defective cells .
B-protein_molecule O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O O O O B-DNA_domain_or_region O O O O B-cell_type I-cell_type O