Research Article

Investigation of Ser315 Substitutions within katG Gene in Isoniazid-Resistant Clinical Isolates of Mycobacterium tuberculosis from South India

Table 1

Mutational profile of INH-resistant clinical isolates of M. tuberculosis from south India.

Serial numberDSTkatG StatesSerial numberDSTkatG States

1MDR ACC TN44MDRAACTN
2MDRACCTN45MDRACCTN
3MDRACCTN46HAACTN
4HTN47 HAACTN
5HTN48HTN
6HTN49HTN
7HACCTN50HACCTN
8MDRTN51HACCTN
9MDRACCTN52HACCTN
10MDRATCTN53 MDRATCTN
11MDRACCTN54MDRACCTN
12MDRACCTN55HCGCTN
13HTN56 MDRTN
14HTN57 MDRACCTN
15MDRACCTN58HTN
16MDRTN59MDRTN
17MDRAACTN60MDRACCTN
18HTN61HACCTN
19HAACTN62HACCTN
20MDRACCTN63HTN
21MDRACCTN64MDRACCTN
22HTN65MDRACCTN
23MDRACCTN66MDRACCTN
24MDRTN67 MDRACCTN
25HACCTN68MDRACCAP
26HACCTN69HAP
27HACCTN70HACCAP
28 MDRTN71MDRAP
29 HTN72MDRAP
30 MDRTN73MDRACCAP
31HTN74MDRAP
32MDRAACTN75MDRAP
33HACCTN76MDRACCAP
34HACCTN77MDRAP
35HACCTN78MDRACCAP
36HACCTN79MDRACCAP
37MDRACCTN80HACCAP
38MDRACCTN81HACCAP
39HACCTN82HKA
40HACCTN83HKA
41MDRTN84HACCKA
42HACCTN85HACCK
43MDRACCTN

Strains with MIC of 1 mg/liter (number 1–28, 68–85), 5 mg/liter (number 29–45), and >5 mg/liter (number 46–67). Tamil Nadu cultures (number 1–67) and other states cultures (number 68–85). AP: Andhra Pradesh, KA: Karnataka, K: Kerala, H: isoniazid, and MDR: multidrug resistant.