UvsY protein enhances the rate of single-stranded-DNA-dependant ATP hydrolysis by UvsX protein. The enhancement of ATP hydrolysis by UvsY protein is shown to result from the ability of UvsY protein to increase the affinity of UvsX protein for single-stranded DNA [1].

1: UvsY protein of bacteriophage T4 is an accessory protein for in vitro catalysis of strand exchange. Harris LD, Griffith JD; J Mol Biol. 1989;206:19-27. PMID:2522995