| Accession | ARO:3000533 |
| Synonym(s) | pvdR |
| CARD Short Name | macA |
| Definition | MacA is a membrane fusion protein that forms an antibiotic efflux complex with MacB and TolC. macA corresponds to 1 locus in Pseudomonas aeruginosa PAO1 and 1 locus in Pseudomonas aeruginosa LESB58. |
| AMR Gene Family | ATP-binding cassette (ABC) antibiotic efflux pump |
| Drug Class | macrolide antibiotic |
| Resistance Mechanism | antibiotic efflux |
| Efflux Component | efflux pump complex or subunit conferring antibiotic resistance |
| Resistomes with Perfect Matches | Neisseria gonorrhoeaeg+wgs |
| Resistomes with Sequence Variants | Neisseria gonorrhoeaeg+wgs |
| Classification | 9 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] + efflux pump complex or subunit conferring antibiotic resistance [Efflux Component] + macrolide antibiotic [Drug Class] + ATP-binding cassette (ABC) antibiotic efflux pump [AMR Gene Family] + erythromycin [Antibiotic] |
| Parent Term(s) | 2 ontology terms | Show |
| Publications | Yum S, et al. 2009. J Mol Biol 387(5): 1286-1297. Crystal structure of the periplasmic component of a tripartite macrolide-specific efflux pump. (PMID 19254725) Xu Y, et al. 2010. Biochem Biophys Res Commun 394(4): 962-965. The tip region of the MacA alpha-hairpin is important for the binding to TolC to the Escherichia coli MacAB-TolC pump. (PMID 20307498) |
Prevalence of macA 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 |
|---|---|---|---|---|
| Neisseria gonorrhoeae | 1.25% | 0% | 1.22% | 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): 760
