TABLE 1.

pe and ppe genes differentially expressed by M. tuberculosis ΔpstA1 mutant^a

Gene	Rv numbering	Differential gene expression
		ΔpstA1 vs WT		ΔpstA1 ΔregX3 vs WT
		Ratio	P value	Ratio	P value
ppe65	rv3621	12.245	0.00438	1.004	0.987
pe32	rv3622	11.616	0.00362	0.847	0.405
ppe25	rv1787	9.775	0.000088	1.775	0.243
ppe27	rv1790	6.819	0.000234	1.284	0.652
pe18	rv1788	3.625	0.000952	1.006	0.99
pe19b	rv1791	4.089	0.0645	1.260	0.706
ppe19	rv1361	3.176	0.0207	0.752	0.251
pe15	rv1386	0.0846	0.00111	1.364	0.705
ppe20	rv1387	0.0797	0.0273	2.022	0.15
pe31	rv3477	0.0237	0.00009	1.676	0.217

^aExpression ratios were determined by microarray analysis using RNA extracted from bacteria grown in P_i-rich 7H9 medium. Data are reproduced from reference 33.

^bDid not achieve P value cutoff of <0.05.