Accession ARO:3002525
CARD Short NameAAC(2')-Ic
DefinitionAAC(2')-Ic is a chromosomal-encoded aminoglycoside acetyltransferase in M. tuberculosis and Mycobacterium tuberculosis variant bovis.
AMR Gene FamilyAAC(2')
Drug Classaminoglycoside antibiotic
Resistance Mechanismantibiotic inactivation
Resistomes with Perfect MatchesMycobacterium tuberculosisg+wgs
Resistomes with Sequence VariantsMycobacterium kansasiig+wgs, Mycobacterium lepromatosisg+wgs, Mycobacterium marinumg+wgs, Mycobacterium tuberculosisg+wgs, Mycobacterium ulceransg+wgs
Classification12 ontology terms | Show
Parent Term(s)6 ontology terms | Show
+ confers_resistance_to_antibiotic gentamicin [Antibiotic]
+ confers_resistance_to_antibiotic tobramycin [Antibiotic]
+ confers_resistance_to_antibiotic dibekacin [Antibiotic]
+ confers_resistance_to_antibiotic netilmicin [Antibiotic]
+ confers_resistance_to_antibiotic 6'-N-ethylnetilmicin [Antibiotic]
+ AAC(2')-I

Ainsa JA, et al. 1997. Mol Microbiol 24(2): 431-441. Aminoglycoside 2'-N-acetyltransferase genes are universally present in mycobacteria: characterization of the aac(2')-Ic gene from Mycobacterium tuberculosis and the aac(2')-Id gene from Mycobacterium smegmatis. (PMID 9159528)


Prevalence of AAC(2')-Ic 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).

Prevalence: protein homolog model (view sequences)

SpeciesNCBI ChromosomeNCBI PlasmidNCBI WGSNCBI GI
Mycobacterium kansasii100%0%100%0%
Mycobacterium lepromatosis100%0%100%0%
Mycobacterium marinum100%0%24.53%0%
Mycobacterium tuberculosis100%0%72.81%0%
Mycobacterium ulcerans100%0%50%0%
Show Perfect Only

Detection Models

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): 300

>gb|CCP42991.1|-|AAC(2')-Ic [Mycobacterium tuberculosis H37Rv]

>gb|AL123456.3|-|314309-314854|AAC(2')-Ic [Mycobacterium tuberculosis H37Rv]