these include reca itself , regulated by the lexa gene product , other genes probably involved in dna repair , some of which are also regulated by the lexa gene product , and the early genes of temperate bacteriophages , which are regulated by their repressors , reca protein is activated to cleave repressors in vitro by interaction with atp ( or the atp analogue atp-gamma s ) and a polynucleotide such as single-stranded dna , probably the same interaction that initiates the strand-pairing reaction .
C1419240
reca
C0012899
dna repair