we show that lexa41 protein is not cleaved by the reca protein-catalyzed pathway in vivo , but the mutant protein is degraded by the lon protease at both 32 degrees c and 42 degrees c. beta-galactosidase activities of lac fusions to 13 different sos promoters were measured at 30 degrees c and 42 degrees c to determine levels of expression and were found to vary considerably .
C0033684
protein
C1564139
mutant protein