Jiang L, Wang Y, Yang S
Shanghai Research Center of Biotechnology, Chinese Academy of Sciences, People's Republic of China.
Genet Anal. 1997 Jul;14(2):51-4. doi: 10.1016/s1050-3862(97)00011-9.
Regulatory gene in Penicillin G Acylase operon (pacR) of E. coli D816 was located in a Taq1-Dra1 fragment within the pac structure gene. Two ORFs were found in this fragment and their transcriptional orientations were opposite with pac. ORF2 was determined as pacR by point mutation.