The cDNA for human protein HsRad54, which is a structural homolog of S
accharomyces cerevisiae recombination/repair protein Rad54, was cloned
and expressed in Escherichia coil, As demonstrated by analysis in vit
ro and in vivo, HsRad54 protein interacts with human Rad51 recombinase
. The interaction is mediated by the N-terminal domain of HsRad54 prot
ein, which interacts with both free and DNA-bound HsRad51 protein.