| Accession | ARO:3001303 |
| Synonym(s) | srmA |
| CARD Short Name | ErmO-srmA |
| Definition | ErmO (gene srmA) is a methyltransferase found in the spiramycin producer Streptomyces ambofaciens. Like other Erm enzymes, it catalyzes the methylation of A2058 of the 23S ribosomal RNA. Specifically, this enzyme transfers only one methyl group. The gene is responsible for self-resistance to spiramycin. |
| AMR Gene Family | Erm 23S ribosomal RNA methyltransferase |
| Drug Class | streptogramin antibiotic, lincosamide antibiotic, macrolide antibiotic |
| Resistance Mechanism | antibiotic target alteration |
| Classification | 12 ontology terms | Show + process or component of antibiotic biology or chemistry + mechanism of antibiotic resistance + determinant of antibiotic resistance + antibiotic target alteration [Resistance Mechanism] + antibiotic target modifying enzyme + ribosomal alteration conferring antibiotic resistance + rRNA methyltransferase conferring antibiotic resistance + antibiotic molecule + 23S ribosomal RNA methyltransferase + streptogramin antibiotic [Drug Class] + lincosamide antibiotic [Drug Class] + macrolide antibiotic [Drug Class] |
| Parent Term(s) | 4 ontology terms | Show + confers_resistance_to_antibiotic lincomycin [Antibiotic] + confers_resistance_to_antibiotic spiramycin [Antibiotic] + Erm 23S ribosomal RNA methyltransferase [AMR Gene Family] + confers_resistance_to_antibiotic carbomycin [Antibiotic] |
| Publications | Pernodet JL, et al. 1999. Microbiology 145(PT 9): 2355-2364. Dispensable ribosomal resistance to spiramycin conferred by srmA in the spiramycin producer Streptomyces ambofaciens. (PMID 10517588) Jenkins G, et al. 1991. Gene 108(1): 55-62. Cloning and characterization of two genes from Streptomyces lividans that confer inducible resistance to lincomycin and macrolide antibiotics. (PMID 1761231) |
Prevalence of ErmO-srmA 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 |
|---|---|---|---|---|
| No prevalence data | ||||
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): 450