| Accession | ARO:3003376 |
| CARD Short Name | Ecol_16rrsB_SPT |
| Definition | Point mutations in the 3' major domain of the rrsB 16S rRNA gene of Escherichia coli can confer resistance to spectinomycin. |
| AMR Gene Family | 16s rRNA with mutation conferring resistance to aminoglycoside antibiotics |
| Drug Class | aminoglycoside antibiotic |
| Resistance Mechanism | antibiotic target alteration |
| Classification | 10 ontology terms | Show + process or component of antibiotic biology or chemistry + mechanism of antibiotic resistance + antibiotic target alteration [Resistance Mechanism] + mutation conferring antibiotic resistance + determinant of antibiotic resistance + antibiotic resistant gene variant or mutant + rRNA with mutation conferring antibiotic resistance + antibiotic molecule + 16S rRNA with mutation conferring antibiotic resistance + aminoglycoside antibiotic [Drug Class] |
| Parent Term(s) | 2 ontology terms | Show + confers_resistance_to_antibiotic spectinomycin [Antibiotic] + 16s rRNA with mutation conferring resistance to aminoglycoside antibiotics [AMR Gene Family] |
| Publications | Brink MF, et al. 1994. Nucleic Acids Res 22(3): 325-331. Spectinomycin interacts specifically with the residues G1064 and C1192 in 16S rRNA, thereby potentially freezing this molecule into an inactive conformation. (PMID 8127669) Johanson U, et al. 1995. Nucleic Acids Res 23(3): 464-466. A new mutation in 16S rRNA of Escherichia coli conferring spectinomycin resistance. (PMID 7885842) Makosky PC, et al. 1987. Biochimie 69(8): 885-889. Spectinomycin resistance at site 1192 in 16S ribosomal RNA of E. coli: an analysis of three mutants. (PMID 2447957) |
Prevalence of Escherichia coli 16S rRNA (rrsB) mutation conferring resistance to spectinomycin among the sequenced genomes, plasmids, and whole-genome shotgun assemblies available at NCBI or IslandViewer for 414 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 | GRDI-AMR2 |
|---|---|---|---|---|---|
| No prevalence data | |||||
Model Type: rRNA gene variant model
Model Definition: Ribosomal RNA (rRNA) Gene Variant Models (RVM) are similar to Protein Variant Models (PVM), i.e. detect sequences based on their similarity to a curated reference sequence and secondarily screen query sequences for curated sets of mutations to differentiate them from antibiotic susceptible wild-type alleles, except RVMs are designed to detect AMR acquired via mutation of genes encoding ribosomal RNAs (rRNA). RVMs include a rRNA reference sequence (often from antibiotic susceptible wild-type alleles), a curated bit-score cut-off, and mapped resistance variants. Mapped resistance variants may include any or all of single point mutations, insertions, or deletions curated from the scientific literature. A Strict RGI match has a BLASTN bit-score above the curated BLASTN cutoff value and contains at least one curated mutation from amongst the mapped resistance variants, while a Loose RGI match has a bit-score less than the curated BLASTN bit-score cut-off but still contains at least one curated mutation from amongst the mapped resistance variants.
Bit-score Cut-off (blastN): 2700
PubMed: mutation data hand curated from the scientific literature, evaluated as conferring resistance (R). CRyPTIC: mutation data acquired from the CRyPTIC catalog, evaluated as resistant (R), susceptible (S), or undetermined (U). ReSeqTB: mutation data acquired from the ReSeqTB catalog, evaluated as conferring resistance (Minimal, Moderate, High), not conferring resistance (None), or Indeterminate. WHO: mutation data acquired from the WHO 2023 catalog, evaluated as resistant (R), susceptible (S), or undetermined (U).| Mutation | Mutation type | PubMed |
|---|---|---|
| g1064a | single resistance variant | PMID:8127669 |
| g1064t | single resistance variant | PMID:8127669 |
| g1064c | single resistance variant | PMID:8127669 |
| c1066t | single resistance variant | PMID:8127669 |
| c1192t | single resistance variant | PMID:8127669 |
| c1192g | single resistance variant | PMID:8127669 |
| c1192a | single resistance variant | PMID:8127669 |
| Curator | Description | Most Recent Edit |
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