Drug   Genes Responsible For Resistance
Streptomycin Ribosomal S12 protein (rpsl), 16S rRNA (rrs), Aminoglycoside phosphotransferase gene (strA)
Isoniazid Catalase-peroxidase  enzyme ( kat G), Alkyl hydroperoxidase reductase (ahpC), Oxidative stress regulator (oxy R)
Rifampicin RNA polymerase (rpoB)
Isoniazid-ethionamide Mycolic acid synthesis (inhA)
Ethambutol Arabinosyl transferase (emb A,B,C)
Flouroquinolones DNA gyrase (gyr A&B)
Table 2: Anti-TB drugs and genes responsible for their resistance [2].