When either serine-32 or serine-36 of I kappa B-alpha was mutated , the protein did not undergo signal-induced phosphorylation or degradation , and NF-kappa B could not be activated .
when either serine-32 or serine-36 of i kappa b-alpha was mutated , the protein did not undergo signal-induced phosphorylation or degradation , and nf-kappa b could not be activated .
O O B-amino_acid_monomer O B-amino_acid_monomer O B-protein_molecule I-protein_molecule I-protein_molecule O O O O O O O O B-other_name B-other_name O B-other_name O O B-protein_molecule I-protein_molecule O O O O O