emrR

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Accession ARO:3000516
Synonym(s)mprA
CARD Short NameemrR
DefinitionEmrR is a negative regulator for the EmrAB-TolC multidrug efflux pump in E. coli. Mutations lead to EmrAB-TolC overexpression.
AMR Gene Familymajor facilitator superfamily (MFS) antibiotic efflux pump
Drug Classfluoroquinolone antibiotic
Resistance Mechanismantibiotic efflux
Efflux Componentefflux pump complex or subunit conferring antibiotic resistance
Efflux Regulatorprotein(s) and two-component regulatory system modulating antibiotic efflux
Resistomes with Perfect MatchesEscherichia colig+p+wgs, Escherichia fergusoniig+wgs, Shigella boydiig+wgs, Shigella dysenteriaeg+wgs, Shigella flexnerig+wgs, Shigella sonneig+wgs
Resistomes with Sequence VariantsCitrobacter amalonaticusg+wgs, Citrobacter freundiig+wgs, Citrobacter koserig+wgs, Citrobacter portucalensisg+wgs, Citrobacter werkmaniig+wgs, Citrobacter youngaeg+wgs, Cronobacter condimentig+wgs, Cronobacter dublinensisg+wgs, Cronobacter malonaticusg+wgs, Cronobacter sakazakiig+wgs, Cronobacter turicensiswgs, Cronobacter universalisg+wgs, Enterobacter asburiaeg+wgs, Enterobacter cancerogenusg+wgs, Enterobacter chengduensisg+wgs, Enterobacter cloacaeg+p+wgs, Enterobacter hormaecheig+p+wgs, Enterobacter kobeig+wgs, Enterobacter roggenkampiig+wgs, Escherichia albertiig+wgs, Escherichia colig+p+wgs, Escherichia fergusoniig+wgs, Escherichia marmotaeg+wgs, Klebsiella aerogenesg+wgs, Klebsiella huaxiensisg+wgs, Klebsiella michiganensisg+wgs, Klebsiella oxytocag+wgs, Klebsiella pneumoniaeg+p+wgs, Klebsiella quasipneumoniaeg+wgs, Kosakonia arachidisg+wgs, Leclercia adecarboxylatag+wgs, Raoultella planticolag+wgs, Salmonella bongorig+wgs, Salmonella entericag+p+wgs, Serratia rubidaeag, Shigella boydiig+wgs, Shigella dysenteriaeg+wgs, Shigella flexnerig+wgs, Shigella sonneig+wgs
Classification9 ontology terms | Show
Parent Term(s)2 ontology terms | Show
Publications

Lomovskaya O, et al. 1995. J Bacteriol 177(9): 2328-2334. EmrR is a negative regulator of the Escherichia coli multidrug resistance pump EmrAB. (PMID 7730261)
Resistomes

Prevalence of emrR 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).

Prevalence: protein homolog model (view sequences)

SpeciesNCBI ChromosomeNCBI PlasmidNCBI WGSNCBI GIGRDI-AMR2
Citrobacter amalonaticus100%0%98.18%0%0%
Citrobacter freundii99.18%0%98.45%0%0%
Citrobacter koseri100%0%100%0%0%
Citrobacter portucalensis100%0%100%0%0%
Citrobacter werkmanii100%0%100%0%0%
Citrobacter youngae66.67%0%100%0%0%
Cronobacter condimenti100%0%100%0%0%
Cronobacter dublinensis100%0%100%0%0%
Cronobacter malonaticus100%0%98.18%0%0%
Cronobacter sakazakii100%0%99.33%0%0%
Cronobacter turicensis0%0%100%0%0%
Cronobacter universalis100%0%100%0%0%
Enterobacter asburiae100%0%98.81%0%0%
Enterobacter cancerogenus100%0%100%0%0%
Enterobacter chengduensis100%0%100%0%0%
Enterobacter cloacae96.43%0.56%97.76%0%0%
Enterobacter hormaechei99.28%0.06%99.22%0%0%
Enterobacter kobei100%0%99.13%0%0%
Enterobacter roggenkampii100%0%99.28%0%0%
Escherichia albertii100%0%100%0%0%
Escherichia coli67.63%0.01%99.19%0%99.78%
Escherichia fergusonii100%0%100%0%0%
Escherichia marmotae100%0%95.83%0%0%
Klebsiella aerogenes100%0%99.72%0%0%
Klebsiella huaxiensis100%0%100%0%0%
Klebsiella michiganensis100%0%99.73%0%0%
Klebsiella oxytoca100%0%100%0%0%
Klebsiella pneumoniae99.41%0.02%99.18%0%0%
Klebsiella quasipneumoniae99.16%0%99.61%0%0%
Kosakonia arachidis100%0%100%0%0%
Leclercia adecarboxylata100%0%100%0%0%
Raoultella planticola100%0%100%0%0%
Salmonella bongori100%0%100%0%0%
Salmonella enterica95.46%0.05%99.78%0%0%
Serratia rubidaea25%0%0%0%0%
Shigella boydii100%0%100%0%0%
Shigella dysenteriae100%0%100%0%0%
Shigella flexneri99%0%99.84%0%0%
Shigella sonnei100%0%99.93%0%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): 280


>gb|AAC75731.1|+|emrR [Escherichia coli str. K-12 substr. MG1655]
MDSSFTPIEQMLKFRASRHEDFPYQEILLTRLCMHMQSKLLENRNKMLKAQGINETLFMALITLESQENHSIQPSELSCALGSSRTNATR
IADELEKRGWIERRESDNDRRCLHLQLTEKGHEFLREVLPPQHNCLHQLWSALSTTEKDQLEQITRKLLSRLDQMEQDGVVLEAMS


>gb|U00096.3|+|2810770-2811300|emrR [Escherichia coli str. K-12 substr. MG1655]
ATGGATAGTTCGTTTACGCCCATTGAACAAATGCTAAAATTTCGCGCCAGCCGCCACGAAGATTTTCCTTATCAGGAGATCCTTCTGACT
CGTCTTTGCATGCACATGCAAAGCAAGCTGCTGGAGAACCGCAATAAAATGCTGAAGGCTCAGGGGATTAACGAGACGTTGTTTATGGCG
TTGATTACGCTGGAGTCTCAGGAAAACCACAGTATTCAGCCTTCTGAATTAAGTTGTGCTCTTGGATCATCCCGTACCAACGCGACGCGT
ATTGCCGATGAACTGGAAAAACGCGGTTGGATCGAACGTCGTGAAAGCGATAACGATCGCCGCTGCCTGCATCTGCAATTAACGGAAAAA
GGTCACGAGTTTTTGCGCGAGGTTTTACCACCGCAGCATAACTGCCTGCATCAACTCTGGTCCGCGCTCAGCACAACAGAAAAAGATCAG
CTCGAGCAAATCACCCGCAAATTGCTCTCCCGTCTCGACCAGATGGAACAAGACGGTGTGGTTCTCGAAGCGATGAGCTAA

Curator Acknowledgements
Curator Description Most Recent Edit