@article{mbs:/content/journal/micro/10.1099/00221287-13-2-279, author = "Rickenberg, H. V. and Lester, G.", title = "The Preferential Synthesis of β-Galactosidase in Escherichia coli", journal= "Microbiology", year = "1955", volume = "13", number = "2", pages = "279-284", doi = "https://doi.org/10.1099/00221287-13-2-279", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-13-2-279", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "Summary: The induced formation of β-galactosidase in relation to overall protein synthesis in Escherichia coli was examined under conditions where the enzyme inducer was required for growth. There was, initially, a substantial production of β-galactosidase without any detectable increase in total cell protein. This phenomenon has been termed ‘preferential’ β-galactosidase synthesis. The occurrence of preferential β-galactosidase synthesis indicates that β-galactosidase formation is a discrete event in cellular metabolism, and is not necessarily geared to overall cell growth. The data obtained also suggest that the carbon source(s) for preferential β-galactosidase synthesis might be of endogenous origin.", }