Dataset Information
rpoB Mutations and Effects on Rifampin Resistance in Mycobacterium tuberculosis.
Ontology highlight
ABSTRACT: Objective
To investigate the mutations within the whole rpoB gene of Mycobacterium tuberculosis and analyze their effects on rifampin (RIF) resistance based on crystal structure.Methods
We sequenced the entire rpoB gene in 175 tuberculosis isolates and quantified their minimum inhibitory concentrations using microplate-based assays. Additionally, the structural interactions between wild-type/mutant RpoB and RIF were also analyzed.Results
Results revealed that a total of 34 mutations distributed across 17 different sites within the whole rpoB gene were identified. Of the 34 mutations, 25 could alter the structural interaction between RpoB and RIF and contribute to RIF resistance. Statistical analysis showed that S450L, H445D, H445Y and H445R mutations were associated with high-level RIF resistance, while D435V was associated with moderate-level RIF resistance.Conclusion
Some mutations within the rpoB gene could affect the interaction between RpoB and RIF and thus are associated with RIF resistance. These findings could be helpful to design new antibiotics and develop novel diagnostic tools for drug resistance in TB.
SUBMITTER: Li MC
PROVIDER: S-EPMC8502021 | biostudies-literature | 2021
REPOSITORIES: biostudies-literature
Publications
<i>rpoB</i> Mutations and Effects on Rifampin Resistance in <i>Mycobacterium tuberculosis</i>.
Infection and drug resistance 20211005
<h4>Objective</h4>To investigate the mutations within the whole <i>rpoB</i> gene of <i>Mycobacterium tuberculosis</i> and analyze their effects on rifampin (RIF) resistance based on crystal structure.<h4>Methods</h4>We sequenced the entire <i>rpoB</i> gene in 175 tuberculosis isolates and quantified their minimum inhibitory concentrations using microplate-based assays. Additionally, the structural interactions between wild-type/mutant RpoB and RIF were also analyzed.<h4>Results</h4>Results revea ...[more]