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Browse Mutations marRM74T

GenemarR

global regulator

Protein ChangeM74T

Nucleotide ChangeT221C

Validation StatusCandidate

Databases

Reslit

Overview

Resistance To: tetracycline
Organisms: E. coli
Papers: 1

Paper Information1

1

Study of Organic Solvent Tolerance and Increased Antibiotic Resistance Properties in E. coli gyrA Mutants.

PMID 24250484 · 2012

Two mutants with higher tetracycline MICs had mutations in marOR.

Mutation Information

marR: p.M74T / c.T221C

Protein Change: M74T
Nucleotide Change: T221C
Organisms: E. coli
Confers Resistance To: tetracycline
Validation Method: PCR and DNA sequencing
Source Database: Reslit

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ResLit

A curated database of antimicrobial resistance genes and mutations extracted from scientific literature.

Browse

AMR Genes
AMR Mutations

Resources

About ResLit
Collaborators
PubMed
NCBI Pathogens
UniProt
CARD
ResFinder DB
PointFinder DB
AMR Rules

Curators

Curator Login
Dashboard

© 2026 ResLit. Data sourced from PubMed literature analysis.

Built for antimicrobial resistance research