Table 3: Major genes of M. tuberculosis linked with acquisition of drug resistance.

Drug Gene Product
Isoniazid katG
inhA
ndh
ahpC
Catalase-peroxidase-peroxynitritase T
NADH-dependent enoyl-acyl carrier protein reductase
NADH dehydrogenase
Alkyl hydroperoxide reductase C
Rifampin rpoB DNA-directed RNA polymerase β chain
Pyrazinamide pncA Pyrazinamidase/nicotinamidase
Streptomycin rpsL
rrs
gidB
30S ribosomal protein S12
16S rRNA
Glucose-inhibited division protein B
Amikacin-kanamycin rrs
eis
16S rRNA
Enhanced intracellular survival protein
Ethionamide ethA
inhA
ethR
ndh
Monooxygenase
NADH-dependent enoyl-acyl carrier protein reductase
TetR family transcriptional repressor
NADH dehydrogenase
Fluoroquinolones gyrAB DNA gyrase
para-Aminosalicylic acid thyA
folC
Thymidylate synthase
Folylpolyglutamate synthase C