Activation of IFN-gamma -responsive genes requires tyrosine phosphorylation of the transcriptional factor STAT-1alpha ( signal transducer and activator of transcription-1alpha ) .
activation of ifn-gamma -responsive genes requires tyrosine phosphorylation of the transcriptional factor stat-1alpha ( signal transducer and activator of transcription-1alpha ) .
O O B-protein_molecule O O O B-amino_acid_monomer O O O O O B-protein_molecule O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O O