we have analyzed nuclear extracts for the presence of dna-binding proteins that interact specifically with the pst-cath ( cp2 ) regulatory region and identified two such putative trans-acting factors : 1 ) the at-factor that is observed within a few hours following the onset of starvation and that binds tightly to stretches of alternating adenine-thymine residues ( poly ( da-dt ] ;
C0012940
dna-binding proteins
C0040627
trans-acting factors