| Accession | ARO:3004334 |
| CARD Short Name | Sent_gyrA_TRC |
| Definition | Point mutations in Salmonella enterica serovar Typhimurium which have been shown to increase the minimum inhibitory concentration of the antibiotic triclosan. It is hypothesized that decreased susceptibility to triclosan in Salmonella gyrA mutants occurs indirectly due to alterations in the stress response pathways. |
| AMR Gene Family | triclosan resistant gyrA |
| Drug Class | disinfecting agents and antiseptics |
| Resistance Mechanism | antibiotic target alteration |
| Resistomes with Sequence Variants | Citrobacter freundiig+wgs, Enterobacter asburiaeg, Enterobacter cloacaewgs, Enterobacter hormaecheiwgs, Enterobacter kobeiwgs, Klebsiella aerogenesg+wgs, Klebsiella oxytocag+wgs, Klebsiella pneumoniaeg+wgs, Klebsiella quasipneumoniaeg, Salmonella entericag+wgs, Serratia liquefacienswgs |
| Classification | 10 ontology terms | Show + process or component of antibiotic biology or chemistry + mechanism of antibiotic resistance + antibiotic target alteration [Resistance Mechanism] + mutation conferring antibiotic resistance + determinant of antibiotic resistance + antibiotic resistant gene variant or mutant + antibiotic resistant DNA topoisomerase subunit + antibiotic molecule + disinfecting agents and antiseptics [Drug Class] + antibiotic resistant DNA topoisomerase subunit gyrA |
| Parent Term(s) | 2 ontology terms | Show + confers_resistance_to_antibiotic triclosan [Antibiotic] + triclosan resistant gyrA [AMR Gene Family] |
| Publications | Webber MA, et al. 2017. J. Antimicrob. Chemother. 72(10):2755-2763 Quinolone-resistant gyrase mutants demonstrate decreased susceptibility to triclosan. (PMID 29091182) |
Prevalence of Salmonella enterica gyrA with mutation conferring resistance to triclosan among the sequenced genomes, plasmids, and whole-genome shotgun assemblies available at NCBI or IslandViewer for 414 important pathogens (see methodological details and complete list of analyzed pathogens). Values reflect percentage of genomes, plasmids, genome islands, or whole-genome shotgun assemblies that have at least one hit to the AMR detection model. Default view includes percentages calculated based on Perfect plus Strict RGI hits. Select the checkbox to view percentages based on only Perfect matches to AMR reference sequences curated in CARD (note: this excludes resistance via mutation as references in protein variant models are often wild-type, sensitive sequences).
| Species | NCBI Chromosome | NCBI Plasmid | NCBI WGS | NCBI GI | GRDI-AMR2 |
|---|---|---|---|---|---|
| Citrobacter freundii | 0.82% | 0% | 0.19% | 0% | 0% |
| Enterobacter asburiae | 3.23% | 0% | 0% | 0% | 0% |
| Enterobacter cloacae | 0% | 0% | 0.32% | 0% | 0% |
| Enterobacter hormaechei | 0% | 0% | 0.47% | 0% | 0% |
| Enterobacter kobei | 0% | 0% | 0.87% | 0% | 0% |
| Klebsiella aerogenes | 2% | 0% | 0.56% | 0% | 0% |
| Klebsiella oxytoca | 2.56% | 0% | 0.42% | 0% | 0% |
| Klebsiella pneumoniae | 20.53% | 0% | 12.95% | 0% | 0% |
| Klebsiella quasipneumoniae | 0.84% | 0% | 0% | 0% | 0% |
| Salmonella enterica | 1.32% | 0% | 1.09% | 0% | 0% |
| Serratia liquefaciens | 0% | 0% | 1.59% | 0% | 0% |
Model Type: protein variant model
Model Definition: Protein Variant Models (PVM) perform a similar search as Protein Homolog Models (PHM), i.e. detect protein sequences based on their similarity to a curated reference sequence, but secondarily screen query sequences for curated sets of mutations to differentiate them from antibiotic susceptible wild-type alleles. PVMs are designed to detect AMR acquired via mutation of house-keeping genes or antibiotic targets, e.g. a mutated gyrase resistant to aminocoumarin antibiotics. PVMs include a protein reference sequence (often from antibiotic susceptible wild-type alleles), a curated bit-score cut-off, and mapped resistance variants. Mapped resistance variants may include any or all of single point mutations, insertions, or deletions curated from the scientific literature. A Strict RGI match has a BLASTP bit-score above the curated BLASTP cutoff value and contains at least one curated mutation from amongst the mapped resistance variants, while a Loose RGI match has a bit-score less than the curated BLASTP bit-score cut-off but still contains at least one curated mutation from amongst the mapped resistance variants.
Bit-score Cut-off (blastP): 1500
PubMed: mutation data hand curated from the scientific literature, evaluated as conferring resistance (R). CRyPTIC: mutation data acquired from the CRyPTIC catalog, evaluated as resistant (R), susceptible (S), or undetermined (U). ReSeqTB: mutation data acquired from the ReSeqTB catalog, evaluated as conferring resistance (Minimal, Moderate, High), not conferring resistance (None), or Indeterminate. WHO: mutation data acquired from the WHO 2023 catalog, evaluated as resistant (R), susceptible (S), or undetermined (U).| Mutation | Mutation type | PubMed |
|---|---|---|
| S83F | single resistance variant | PMID:29091182 |
| D87G | single resistance variant | PMID:29091182 |
| Curator | Description | Most Recent Edit |
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