The I alpha1 promoter activates transcription of the human germ-line C alpha1 gene for IgA1 and mediates the transforming growth factor ( TGF ) -beta1 responsiveness of this locus .
the i alpha1 promoter activates transcription of the human germ-line c alpha1 gene for iga1 and mediates the transforming growth factor ( tgf ) -beta1 responsiveness of this locus .
O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-protein_molecule O O O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O O O O O