| Accession | ARO:3004290 |
| CARD Short Name | Ecol_ampC_BLA |
| Definition | A class C ampC beta-lactamase (cephalosporinase) enzyme described in Escherichia coli shown clinically to confer resistance to penicillin-like and cephalosporin-class antibiotics. |
| AMR Gene Family | ampC-type beta-lactamase |
| Drug Class | penam, cephalosporin |
| Resistance Mechanism | antibiotic inactivation |
| Resistomes with Perfect Matches | Escherichia colig+p+wgs, Klebsiella oxytocap, Shigella boydiiwgs, Shigella flexnerig+wgs, Shigella sonneiwgs |
| Resistomes with Sequence Variants | Escherichia albertiig+wgs, Escherichia colig+p+wgs, Escherichia marmotaewgs, Klebsiella oxytocap, Shigella boydiig+wgs, Shigella dysenteriaeg+wgs, Shigella flexnerig+wgs, Shigella sonneig+wgs |
| Classification | 14 ontology terms | Show + process or component of antibiotic biology or chemistry + mechanism of antibiotic resistance + determinant of antibiotic resistance + antibiotic molecule + antibiotic inactivation [Resistance Mechanism] + antibiotic inactivation enzyme + hydrolysis of antibiotic conferring resistance + beta-lactam antibiotic + cephem + hydrolysis of beta-lactam antibiotic by serine beta-lactamase + beta-lactamase + class C beta-lactamase + penam [Drug Class] + cephalosporin [Drug Class] |
| Parent Term(s) | 2 ontology terms | Show + confers_resistance_to_antibiotic penicillin [Antibiotic] + ampC-type beta-lactamase [AMR Gene Family] |
| Publications | Jacoby GA. 2009. Clin Microbiol Rev 22(1): 161-182. AmpC beta-lactamases. (PMID 19136439) Abraham EP, et al. . Rev. Infect. Dis. 10(4):677-8 An enzyme from bacteria able to destroy penicillin. 1940. (PMID 3055168) |
Prevalence of Escherichia coli ampC beta-lactamase 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 |
|---|---|---|---|---|
| Escherichia albertii | 90% | 0% | 56.77% | 0% |
| Escherichia coli | 12.91% | 0.01% | 9.58% | 0% |
| Escherichia marmotae | 0% | 0% | 4.17% | 0% |
| Klebsiella oxytoca | 0% | 0.68% | 0% | 0% |
| Shigella boydii | 80% | 0% | 81.11% | 0% |
| Shigella dysenteriae | 7.14% | 0% | 40% | 0% |
| Shigella flexneri | 72% | 0% | 73.76% | 0% |
| Shigella sonnei | 97.56% | 0% | 83.71% | 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): 700
Type of Antibiotic Resistance: Intrinsic or chromosomally-encoded