ArticleCommunications biology2024
Mycobacterium smegmatis MfpC is a GEF that regulates mfpA translationally to alter the fluoroquinolone efficacy.
Article in Communications biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- A widespread actinobacterial G protein system regulates production of specialized metabolites inmSphere · 2026Article
- Article
- Structural basis ofbioRxiv : the preprint server for biology · 2026Article
- Key Proteins and Enzymatic Mechanisms Underlying Drug Resistance in Mycobacterium tuberculosis.Advances in experimental medicine and biology · 2026Review
- A widespread Actinobacterial G Protein System regulates production of specialized metabolites inbioRxiv : the preprint server for biology · 2025Article
- The accessory protein CvnF8 modulates histidine kinase activity in an Actinobacterial G protein system inbioRxiv : the preprint server for biology · 2025Article
- Comprehensive genome analysis ofVeterinary world · 2025Article
- Decoding drug tolerance: insights into theFrontiers in microbiology · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis, remains a serious threat to global public health. Fluoroquinolones (FQs) are effective against M. tuberculosis; however, resistant strains have limited their efficacy. Mycobacterium fluoroquinolone resistance protein A (MfpA) confers intrinsic resistance to FQs; however, its regulatory mechanisms remain largely unknown. Using M. smegmatis as a model, we investigated whether MfpC is necessary for FQ susceptibility. MfpC mutants were sensitive to moxifloxacin, indicating that MfpC is involved in FQ susceptibility. By testing the mfpC inactivation phenotype in different mutants and using mycobacterial protein fragment complementation, we demonstrated that the function of MfpC depends on its interactions with MfpB. Guanine nucleotide exchange assays and site-directed mutagenesis confirmed that MfpC acts as a guanine nucleotide exchange factor to regulate MfpB. We propose that MfpB influences MfpA at the translational level. In summary, we reveal the role of MfpC in regulating the function of MfpA in FQ resistance.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.