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. 2001 Oct;183(19):5675–5683. doi: 10.1128/JB.183.19.5675-5683.2001

FIG. 3.

FIG. 3

Influence of the iea18 mutation on malK, malP, and malT pHo regulation. β-Galactosidase activity was assayed during growth at 30°C in MM adjusted to different pHs and supplemented with ampicillin and glycerol (A and C) or glycerol and maltose (B). ⧫, parental strain; □, iea18 strain. (A) (malK′-lacZ+)1 operon fusion on pJEL250 (GPH1768 and GPH8840); (B) (malP′-lacZ+)1 operon fusion on pJEL250 (GPH9463 and GPH9473); (C) (malT′-lacZ+)1 operon fusion on pJEL250 (GPH8881 and GPH9401). Error bars are as in Fig. 2.