Table 1 Susceptibilities of different M. marinum/M. ulcerans strains to TB47 and rifampin in liquid using bioluminescence

From: The compound TB47 is highly bactericidal against Mycobacterium ulcerans in a Buruli ulcer mouse model

Mycobacteria

Gene: qcrB from M. marinum

MICluxs (μg mL−1)

M. marinum strains

 

TB47

RIF

Wild-type (Autoluminescent strain)

Wild-type

0.001–0.008

0.25–1.0

Type 1 mutant

ACC to CCC (Thr323Pro)

 > 128

0.25–1.0

Type 2 mutant

ACC to GCC (Thr323Ala)

 > 128

0.25–1.0

Wild-type:: vector

Wild-type containing an empty plasmid

0.001–0.008

0.25–1.0

Wild-type:: qcrB WT

Over-expression of wild-type qcrB

32–64

0.25–1.0

Wild-type:: qcrB THR323PRO

Over-expression of qcrBThr323Pro

 > 128

0.25–1.0

Wild-type:: qcrB THR323ALA

Over-expression of qcrBThr323Ala

 > 128

0.5–2.0

M. ulcerans strains

 

TB47

RIF

Wild-type (AlMu 1059)

Wild-type

0.0016

0.06–0.25

Wild-type:: vector

Wild-type containing an empty plasmid

0.0016–0.0031

0.06–0.25

Wild-type:: qcrB WT

Over-expression of wild-type qcrB

0.05–0.10

0.06–0.25

Wild-type:: qcrB THR323PRO

Over-expression of qcrBThr323Pro

0.10 to 0.40

0.06–0.25

Wild-type:: qcrB THR323ALA

Over-expression of qcrBThr323Ala

0.10 to 0.40

0.125–0.5

  1. MIC minimum inhibitory concentration