| Accession | ARO:3004555 |
| CARD Short Name | dfrA32 |
| Definition | A dihydrofolate reductase and trimethoprim resistance gene identified from non-typhoidal multidrug-resistant Salmonella enterica. |
| AMR Gene Family | trimethoprim resistant dihydrofolate reductase dfr |
| Drug Class | diaminopyrimidine antibiotic |
| Resistance Mechanism | antibiotic target replacement |
| Resistomes with Perfect Matches | Actinobacillus pleuropneumoniaeg, Enterobacter hormaecheiwgs, Escherichia colig+wgs, Klebsiella pneumoniaewgs, Klebsiella quasipneumoniaewgs, Pasteurella multocidag, Proteus mirabilisg+wgs, Salmonella entericawgs, Vibrio parahaemolyticuswgs |
| Resistomes with Sequence Variants | Actinobacillus pleuropneumoniaeg, Enterobacter hormaecheiwgs, Escherichia colig+wgs, Klebsiella pneumoniaeg+wgs, Klebsiella quasipneumoniaewgs, Laribacter hongkongensiswgs, Pasteurella multocidag+p, Proteus mirabilisg+wgs, Salmonella entericawgs, Vibrio parahaemolyticuswgs |
| Classification | 9 ontology terms | Show + process or component of antibiotic biology or chemistry + mechanism of antibiotic resistance + antibiotic molecule + antibiotic target replacement [Resistance Mechanism] + determinant of antibiotic resistance + diaminopyrimidine antibiotic [Drug Class] + antibiotic target replacement protein + antibiotic resistant dihydrofolate reductase + trimethoprim [Antibiotic] |
| Parent Term(s) | 2 ontology terms | Show + trimethoprim resistant dihydrofolate reductase dfr [AMR Gene Family] + confers_resistance_to_antibiotic trimethoprim [Antibiotic] |
| Publications | Krauland M, et al. 2010. Curr. Microbiol. 60(3):217-23 Novel integron gene cassette arrays identified in a global collection of multi-drug resistant non-typhoidal Salmonella enterica. (PMID 19921331) |
Prevalence of dfrA32 among the sequenced genomes, plasmids, and whole-genome shotgun assemblies available at NCBI or IslandViewer for 413 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 |
|---|---|---|---|---|
| Actinobacillus pleuropneumoniae | 2.78% | 0% | 0% | 0% |
| Enterobacter hormaechei | 0% | 0% | 0.04% | 0% |
| Escherichia coli | 0.05% | 0% | 0.01% | 0% |
| Klebsiella pneumoniae | 0.06% | 0% | 0.02% | 0% |
| Klebsiella quasipneumoniae | 0% | 0% | 0.13% | 0% |
| Laribacter hongkongensis | 0% | 0% | 2.08% | 0% |
| Pasteurella multocida | 0.71% | 2.17% | 0% | 0% |
| Proteus mirabilis | 18.35% | 0% | 3.8% | 0% |
| Salmonella enterica | 0% | 0% | 0.02% | 0% |
| Vibrio parahaemolyticus | 0% | 0% | 0.05% | 0% |
Model Type: protein homolog model
Model Definition: Protein Homolog Models (PHM) detect protein sequences based on their similarity to a curated reference sequence, using curated BLASTP bitscore cut-offs. Protein Homolog Models apply to all genes that confer resistance through their presence in an organism, such as the presence of a beta-lactamase gene on a plasmid. PHMs include a reference sequence and a bitscore cut-off for detection using BLASTP. A Perfect RGI match is 100% identical to the reference protein sequence along its entire length, a Strict RGI match is not identical but the bit-score of the matched sequence is greater than the curated BLASTP bit-score cutoff, Loose RGI matches have a bit-score less than the curated BLASTP bit-score cut-off.
Bit-score Cut-off (blastP): 300