A nondegradable mutant of I kappa B blocked both FasL expression and apoptosis induced by DNA damage but not Fas ligation .
a nondegradable mutant of i kappa b blocked both fasl expression and apoptosis induced by dna damage but not fas ligation .
O O O O B-protein_molecule I-protein_molecule I-protein_molecule O O B-protein_molecule O O B-other_name O O B-other_name I-other_name O O B-protein_molecule O O