NUCLEOTIDE-SEQUENCE OF THE CRO-CII-OOP REGION OF BACTERIOPHAGE-434DNA

The nucleotide sequence of a 869 bp segment of phage 434 DNA including the regulatory genes cro and cII is presented and compared with the corresponding part of the phage λ DNA sequence. The 434 cro protein as deduced from the DNA sequence is a highly basic protein of 71 amino acid residues with a calculated molecular weight of 8089. While the cro gene sequences of phage 434 and λ DNA are very different, the nucleotide sequences to the right of the λimm434 boundary show differences only at 11 out of 512 positions. Nucleotide substitutions in the cII gene occur with one exception in the third positions of the respective codons and only one out of several DNA regulatory signals located in this region of the phage genomes is affected by these nucleotide substitution © 1979 Information Retrieval Limited.