Expression of the Genes Encoding the Trk and Kdp Potassium Transport Systems of Mycobacterium tuberculosis during Growth In Vitro

Table 4

Ratio of gene expression of both strains of Mtb during mid- and late-log phases in relation to the corresponding early-log phase.

Gene name	H37Rv		trk-gene knockout
	Mid-log	Late-log	Mid-log	Late-log
ceoB	0.9	188.8	NA	NA
ceoC	1.0	25.4	NA	NA
kdpA	0.7	27.5	0.7	151.4
kdpB	1.2	77.7	1.4	534.4
kdpC	1.6	235.0	0.9	952.1
kdpF	0.7	54.5	1.3	233.7
kdpD	1.1	40.1	1.0	135.3
kdpE	1.0	75.7	0.9	262.4
sigA	0.8	4.3	0.8	10.2

Not available since the expression levels in the mutant for these two genes were not detectable.