USF/c-Myc enhances , while Yin-Yang 1 suppresses , the promoter activity of CXCR4 , a coreceptor for HIV-1 entry .
usf/c-myc enhances , while yin-yang 1 suppresses , the promoter activity of cxcr4 , a coreceptor for hiv-1 entry .
B-protein_molecule O O O B-protein_molecule I-protein_molecule O O O B-other_name I-other_name O B-protein_molecule O O B-protein_family_or_group O B-virus O O