it is shown that the amino acid sequence and the dna gene sequence of the 25 amino-terminal residues of the lac repressor protein of escherichia coli are homologous with the sequences of five dna-binding proteins : the cro repressor proteins from phage lambda and phage 434 , the ci and cii proteins from phage lambda , and the repressor protein from salmonella phage p22 .
C0012940
dna-binding proteins
C0033684
protein