Table 1

Minimum inhibitory concentration (MIC) of rifampin and associated variable amino acids in positions 511–533 of the β subunit of RNA polymerase of Mycobacterium tuberculosis [2–4].

MIC (μg/ml)
No. of Isolates
No. of Isolates
with Differences
Amino Acid Differences from Consensus (No. of Isolates)

0.0625
48
1
515:V(1)
0.125
2
0

0.25
2
0

< 0.39
13
2
521:P(1), 533:P(1)
0.5
2
1
533:P(1)
1
3
1
533:P(1)
2
2
1
511:R and 512:T(1)
4
2
1
516:V(1)
8
6
5
516:V(1), 526:G(1), 526:L(2), 526:Q and 533:P(1)
12.5
3
3
514:L and 516:V(1), 533:P(2)
16
3
3
526:L(1), 526:N(1), 529:K(1)
32
1
0

> 32
15
15
511:R and 516:Y(1), 513:K(1), 513:L(1), 526:D(2), 526:Y(4), 531:L(4), 531:W(1), 533:P(1)
50
1
1
531:L(1)
64
7
7
531:L(7)
100
1
1
531:L(1)
128
19
19
513:L(1), 516:Y(1), 526Y(1), 531L(16)
200
1
1
526:D(1)
> 200
7
7
513:L(1), 516:A and 526:D(1), 526:P(1), 526:Y(2), 531:L(2)
256
13
13
513:K(1), 516:Y and 526:N(1), 526:P(1), 531:L(10)
512
18
18
526:P(4), 526:R(2), 526:Y(3), 531:L(7), 531:W(2)
> 512
4
4
516:Y(1), 526:D(1), 526:P(1), 531:W(1)

Cummings and Segal BMC Bioinformatics 2004 5:137   doi:10.1186/1471-2105-5-137