the product of the rep gene of escherichia coli catalytically separates phix174 duplex dna strands in advance of their replication , utilizing atp in the process ( scott , j. f. , eisenberg , s. , bertsch , l. l. , and kornberg , a . ( 1977 ) proc . natl . acad . sci . u. s. a . 74 , 193-197 ) .
C0012854
dna
C0598312
replication