| Accession | ARO:3001418 |
| Synonym(s) | ARI-1 |
| CARD Short Name | OXA-23 |
| Definition | OXA-23 is a beta-lactamase found in A. baumannii. |
| AMR Gene Family | OXA beta-lactamase, OXA-23-like beta-lactamase |
| Drug Class | penam, carbapenem |
| Resistance Mechanism | antibiotic inactivation |
| Resistomes with Perfect Matches | Acinetobacter baumanniig+p+wgs+gi, Acinetobacter indicuswgs, Acinetobacter johnsoniip, Acinetobacter nosocomialisg+wgs, Acinetobacter pittiiwgs, Acinetobacter radioresistenswgs, Acinetobacter wuhouensisp, Escherichia colig, Proteus mirabilisg+wgs+gi |
| Resistomes with Sequence Variants | Acinetobacter baumanniig+p+wgs+gi, Acinetobacter indicuswgs, Acinetobacter johnsoniip, Acinetobacter nosocomialisg+p+wgs, Acinetobacter pittiiwgs, Acinetobacter radioresistenswgs, Acinetobacter wuhouensisp, Escherichia colig, Proteus mirabilisg+wgs+gi |
| Classification | 15 ontology terms | Show + process or component of antibiotic biology or chemistry + mechanism of antibiotic resistance + antibiotic inactivation [Resistance Mechanism] + antibiotic molecule + determinant of antibiotic resistance + antibiotic inactivation enzyme + beta-lactam antibiotic + hydrolysis of antibiotic conferring resistance + hydrolysis of beta-lactam antibiotic by serine beta-lactamase + beta-lactamase + penam [Drug Class] + oxacillin [Antibiotic] + class D beta-lactamase + carbapenem [Drug Class] + OXA beta-lactamase [AMR Gene Family] |
| Parent Term(s) | 1 ontology terms | Show + OXA-23-like beta-lactamase [AMR Gene Family] |
| Sub-Term(s) | 3 ontology terms | Show + BLI-489 [Adjuvant] is_small_molecule_inhibitor + ANT3310 [Adjuvant] is_small_molecule_inhibitor + Xeruborbactam [Adjuvant] is_small_molecule_inhibitor |
| Publications | Donald HM, et al. 2000. Antimicrob Agents Chemother 44(1): 196-199. Sequence analysis of ARI-1, a novel OXA beta-lactamase, responsible for imipenem resistance in Acinetobacter baumannii 6B92. (PMID 10602749) |
Prevalence of OXA-23 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 |
|---|---|---|---|---|
| Acinetobacter baumannii | 45.84% | 2.86% | 39.94% | 6.29% |
| Acinetobacter indicus | 0% | 0% | 2.6% | 0% |
| Acinetobacter johnsonii | 0% | 1.39% | 0% | 0% |
| Acinetobacter nosocomialis | 9.09% | 1.64% | 1.72% | 0% |
| Acinetobacter pittii | 0% | 0% | 1.7% | 0% |
| Acinetobacter radioresistens | 0% | 0% | 22.81% | 0% |
| Acinetobacter wuhouensis | 0% | 4.55% | 0% | 0% |
| Escherichia coli | 0.02% | 0% | 0% | 0% |
| Proteus mirabilis | 3.67% | 0% | 3.63% | 3.7% |
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): 500