| Accession | ARO:3001328 |
| Synonym(s) | cmlA cmr |
| Definition | Multidrug efflux pump in E. coli. This multidrug efflux system was originally identified as the Cmr/CmlA chloramphenicol exporter. |
| AMR Gene Family | major facilitator superfamily (MFS) antibiotic efflux pump |
| Drug Class | tetracycline antibiotic, benzalkonium chloride, rhodamine |
| Resistance Mechanism | antibiotic efflux |
| Efflux Component | efflux pump complex or subunit conferring antibiotic resistance |
| Classification | 8 ontology terms | Show + process or component of antibiotic biology or chemistry + mechanism of antibiotic resistance + determinant of antibiotic resistance + antibiotic molecule + antibiotic efflux [Resistance Mechanism] + antibiotic without defined classification + efflux pump complex or subunit conferring antibiotic resistance [Efflux Component] + tetracycline antibiotic [Drug Class] |
| Parent Term(s) | 4 ontology terms | Show + confers_resistance_to_antibiotic tetracycline [Antibiotic] + major facilitator superfamily (MFS) antibiotic efflux pump [AMR Gene Family] + confers_resistance_to_antibiotic benzalkonium chloride [Drug Class] + confers_resistance_to_antibiotic rhodamine [Drug Class] |
| Publications | Heng J, et al. 2015. Cell Res. 25(9):1060-73 Substrate-bound structure of the E. coli multidrug resistance transporter MdfA. (PMID 26238402) Bohn C, et al. 1998. J. Bacteriol. 180(22):6072-5 The Escherichia coli cmlA gene encodes the multidrug efflux pump Cmr/MdfA and is responsible for isopropyl-beta-D-thiogalactopyranoside exclusion and spectinomycin sensitivity. (PMID 9811673) |
Prevalence of Escherichia coli mdfA among the sequenced genomes, plasmids, and whole-genome shotgun assemblies available at NCBI for 88 important pathogens (see methodological details and complete list of analyzed pathogens). Values reflect percentage of genomes, plasmids, 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 |
|---|---|---|---|
| Acinetobacter baumannii | 0% | 0% | 0.02% |
| Citrobacter amalonaticus | 100% | 0% | 96.88% |
| Citrobacter freundii | 97.37% | 0% | 89.81% |
| Citrobacter koseri | 87.5% | 0% | 96.55% |
| Citrobacter youngae | 100% | 0% | 75% |
| Enterobacter cloacae | 0% | 0% | 0.39% |
| Enterobacter hormaechei | 0% | 0.55% | 0.73% |
| Escherichia coli | 51.25% | 0% | 96.9% |
| Klebsiella oxytoca | 0% | 0% | 0.39% |
| Klebsiella pneumoniae | 0% | 0% | 0.06% |
| Listeria monocytogenes | 0% | 0% | 0.03% |
| Proteus mirabilis | 0% | 0% | 0.56% |
| Pseudomonas aeruginosa | 0% | 0% | 0.02% |
| Salmonella enterica | 91.05% | 0% | 86.33% |
| Shigella dysenteriae | 95.83% | 0% | 100% |
| Shigella flexneri | 97.92% | 0% | 99.34% |
| Shigella sonnei | 94.74% | 0% | 98.84% |
| Staphylococcus aureus | 0% | 0% | 0.01% |
| Stenotrophomonas maltophilia | 0% | 0% | 0.26% |
| Vibrio parahaemolyticus | 0% | 0% | 0.14% |
Model Type: protein homolog model
Model Definition: The protein homolog model is an AMR detection model. Protein homolog models detect a protein sequence based on its similarity to a curated reference sequence. A protein homolog model has only one parameter: a curated BLASTP bitscore cutoff for determining the strength of a match. Protein homolog model matches to reference sequences are categorized on three criteria: perfect, strict and loose. A perfect match is 100% identical to the reference sequence along its entire length; a strict match is not identical but the bitscore of the matched sequence is greater than the curated BLASTP bitscore cutoff. Loose matches are other sequences with a match bitscore less than the curated BLASTP bitscore.
Bit-score Cut-off (blastP): 700