However , the Fis-regulated E. coli proP gene seems to be regulated in a manner similar to that of hilA , in that levels are low during early exponential phase growth , followed by a burst of expression in late exponential-growth and a decrease in expression during stationary-phase ( Xu and Johnson , 1995 ) .
proP and other Intraperitoneal LD50 5 , 25 , 25 4 10 3 10 7 SL1344 SL1344 fis : : kan Fis-regulated promoters have been found to have both low-affinity and high-affinity Fis binding sites .