the nf-kappab transcription factor was affinity-purified from deoxycholate ( doc ) -treated cytosol of hela cells and shown to contain both a 50-kappad polypeptide ( p50 ) with a dna-binding specificity identical to that of nuclear nf-kappab and a 65-kappad protein ( p65 ) lacking dna binding activity .
C0079904
nf-kappab
C0040648
transcription factor