Inactive calcineurin is unable to activate the nuclear factor of activated T cells ( NFAT ) , a transcription factor required for expression of the interleukin 2 ( IL-2 ) gene .
inactive calcineurin is unable to activate the nuclear factor of activated t cells ( nfat ) , a transcription factor required for expression of the interleukin 2 ( il-2 ) gene .
O B-protein_molecule O O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O B-protein_family_or_group O O O B-protein_family_or_group I-protein_family_or_group O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region B-protein_molecule O O O