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. 1999 Apr;181(7):2059–2066. doi: 10.1128/jb.181.7.2059-2066.1999

TABLE 5.

Effect of a codY mutation on the expression of the bkd operon

Strain Relevant genotype β-Galactosidase activity (Miller units/mg of protein) in the following minimal medium:
MM + glucose MM + glucose + isoleucine (20 mM) MM + glucose + 0.2% Casamino Acids MM + glucose + 0.2% Casamino Acids + isoleucine (20 mM)
QB7501 ptb′-′lacZ 20 1,975 45 575
QB7522 ptb′-′lacZ codY::erm 140 2,255 765 2,325
HHS Vulnerability Disclosure