T4 gene 32 protein model for control of activity at replication fork

Abstract
Limited hydrolysis of gene 32 protein [of bacteriophage T4] by various proteinases results in the production of 3 stable cleavage products. Two of these products show an affinity for native T4 DNA cellulose that the uncleaved protein does not exhibit. A model for proteolytic cleavage and for the local unwinding of DNA in advance of the replication fork is discussed in terms of this unusual binding affinity.