| Accession | ARO:3000596 |
| Synonym(s) | ermCD ermCX |
| CARD Short Name | ErmX |
| Definition | ErmX is a rRNA methyltransferase that protects the ribosome from inactivation due to antibiotic binding. |
| AMR Gene Family | Erm 23S ribosomal RNA methyltransferase |
| Drug Class | streptogramin antibiotic, streptogramin B antibiotic, streptogramin A antibiotic, macrolide antibiotic, lincosamide antibiotic |
| Resistance Mechanism | antibiotic target alteration |
| Resistomes with Sequence Variants | Bifidobacterium bifidumg+wgs, Bifidobacterium breveg+wgs+gi, Bifidobacterium dentiumwgs, Bifidobacterium longumg+wgs+gi, Corynebacterium amycolatumg+wgs, Corynebacterium diphtheriaep+wgs, Corynebacterium imitansg+gi, Corynebacterium jeikeiumg+wgs+gi, Corynebacterium urealyticumg+wgs+gi, Corynebacterium ureicelerivoransg+wgs, Cutibacterium acneswgs, Gardnerella vaginalisg, Mobiluncus mulieriswgs, Rothia mucilaginosag+wgs, Schaalia odontolyticag+wgs+gi, Trueperella pyogenesg+gi |
| Classification | 14 ontology terms | Show + process or component of antibiotic biology or chemistry + mechanism of antibiotic resistance + antibiotic target alteration [Resistance Mechanism] + determinant of antibiotic resistance + antibiotic molecule + antibiotic target modifying enzyme + ribosomal alteration conferring antibiotic resistance + streptogramin antibiotic [Drug Class] + rRNA methyltransferase conferring antibiotic resistance + streptogramin B antibiotic [Drug Class] + streptogramin A antibiotic [Drug Class] + macrolide antibiotic [Drug Class] + 23S ribosomal RNA methyltransferase + lincosamide antibiotic [Drug Class] |
| Parent Term(s) | 25 ontology terms | Show + Erm 23S ribosomal RNA methyltransferase [AMR Gene Family] + confers_resistance_to_antibiotic erythromycin [Antibiotic] + confers_resistance_to_antibiotic roxithromycin [Antibiotic] + confers_resistance_to_antibiotic telithromycin [Antibiotic] + confers_resistance_to_antibiotic clarithromycin [Antibiotic] + confers_resistance_to_antibiotic tylosin [Antibiotic] + confers_resistance_to_antibiotic spiramycin [Antibiotic] + confers_resistance_to_antibiotic azithromycin [Antibiotic] + confers_resistance_to_antibiotic dirithromycin [Antibiotic] + confers_resistance_to_antibiotic dalfopristin [Antibiotic] + confers_resistance_to_antibiotic griseoviridin [Antibiotic] + confers_resistance_to_antibiotic madumycin II [Antibiotic] + confers_resistance_to_antibiotic virginiamycin M1 [Antibiotic] + confers_resistance_to_antibiotic ostreogrycin B3 [Antibiotic] + confers_resistance_to_antibiotic patricin A [Antibiotic] + confers_resistance_to_antibiotic patricin B [Antibiotic] + confers_resistance_to_antibiotic pristinamycin IA [Antibiotic] + confers_resistance_to_antibiotic pristinamycin IB [Antibiotic] + confers_resistance_to_antibiotic quinupristin [Antibiotic] + confers_resistance_to_antibiotic pristinamycin IC [Antibiotic] + confers_resistance_to_antibiotic vernamycin C [Antibiotic] + confers_resistance_to_antibiotic virginiamycin S2 [Antibiotic] + confers_resistance_to_antibiotic lincomycin [Antibiotic] + confers_resistance_to_antibiotic clindamycin [Antibiotic] + confers_resistance_to_antibiotic oleandomycin [Antibiotic] |
| Publications | Rosato AE, et al. 2001. Antimicrob Agents Chemother 45(7): 1982-1989. Inducible macrolide resistance in Corynebacterium jeikeium. (PMID 11408212) |
Prevalence of ErmX 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 |
|---|---|---|---|---|
| Bifidobacterium bifidum | 7.14% | 0% | 11.94% | 0% |
| Bifidobacterium breve | 11.76% | 0% | 8.43% | 50% |
| Bifidobacterium dentium | 0% | 0% | 2.27% | 0% |
| Bifidobacterium longum | 9.47% | 0% | 11.04% | 40% |
| Corynebacterium amycolatum | 42.86% | 0% | 44.44% | 0% |
| Corynebacterium diphtheriae | 0% | 50% | 1.57% | 0% |
| Corynebacterium imitans | 100% | 0% | 0% | 50% |
| Corynebacterium jeikeium | 80% | 0% | 94.74% | 100% |
| Corynebacterium urealyticum | 83.33% | 0% | 100% | 50% |
| Corynebacterium ureicelerivorans | 100% | 0% | 100% | 0% |
| Cutibacterium acnes | 0% | 0% | 1.06% | 0% |
| Gardnerella vaginalis | 26.67% | 0% | 0% | 0% |
| Mobiluncus mulieris | 0% | 0% | 20.59% | 0% |
| Rothia mucilaginosa | 20% | 0% | 5.26% | 0% |
| Schaalia odontolytica | 33.33% | 0% | 12.5% | 100% |
| Trueperella pyogenes | 40% | 0% | 0% | 40% |
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): 400