Antagonistic Roles for GcvA and GcvB in hdeAB Expression in Escherichia coli

Table 2

Effect of GcvA and GcvB on growth at low pH.

Strain	GT (min) grown in LB at
	pH 7.0	pH 4.5*
(1) WT	52±5	133±2
(2) ΔgcvAB	56±2	160±6
(3) WT[p𝑔𝑐𝑣𝐴^3+]	67±7	306±9
(4) ΔgcvAB[p𝑔𝑐𝑣𝐴^3+]	60±6	437±45
(5) WT[p𝑔𝑐𝑣𝐴^3+𝑔𝑐𝑣𝐵^3+]	67±7	157±4
(6) ΔgcvAB[p𝑔𝑐𝑣𝐴^3+𝑔𝑐𝑣𝐵^3+]	62±1	150±5

*Cultures were tested at the end of the experiment to verify the pH had not changed.