Browse AMR Genes
Explore antimicrobial resistance genes from the literature
Explore antimicrobial resistance genes from the literature
dihydrofolate reductase
Overview
| Allele | Database | Papers | Drug Classes | Organisms | Countries | Years | Sequence Accession | Protein Accession |
|---|---|---|---|---|---|---|---|---|
| DfrA30 | Card DatabaseReference Gene CatalogReslit | 6 | Trimethoprim, TRIMETHOPRIM +1 | Klebsiella pneumoniae +2 | India, Global, United States, Brazil | 2011, 2019, 2023 |
| CAQ53849.2 |
| dfrA30 | Card DatabaseResFinder Database | 2 | TRIMETHOPRIM | Klebsiella sp. MB45 | - | 2011 | AM997279 | CAQ53849.2 |
A multiple antibiotic and serum resistant oligotrophic strain, Klebsiella pneumoniae MB45 having novel dfrA30, is sensitive to ZnO QDs.
The study identifies a novel trimethoprim resistance gene, dfrA30, in the oligotrophic strain Klebsiella pneumoniae MB45, which confers high-level resistance to trimethoprim. The gene was functionally validated by cloning and susceptibility testing in E. coli JM109.
A multiple antibiotic and serum resistant oligotrophic strain, Klebsiella pneumoniae MB45 having novel dfrA30, is sensitive to ZnO QDs.
A multiple antibiotic and serum resistant oligotrophic strain, Klebsiella pneumoniae MB45 having novel dfrA30, is sensitive to ZnO QDs.
A multiple antibiotic and serum resistant oligotrophic strain, Klebsiella pneumoniae MB45 having novel dfrA30, is sensitive to ZnO QDs.
Antimicrobial Resistance in Bacteria: Mechanisms and Current Challenges
This paper characterizes several beta-lactamases, including TEM-1, SHV-1, CTX-M-15, and NDM-1, which confer resistance to various beta-lactam antibiotics. It also identifies erm(B) and mef(A) as mechanisms of macrolide, lincosamide, and streptogramin B resistance. Additionally, aadA1 and aac(6')-Ib are noted for aminoglycoside resistance, while catA1 and floR contribute to chloramphenicol resistance. The vanA gene is associated with glycopeptide resistance, and mcr-1 is linked to polymyxin resistance.
Applying Rapid Whole-Genome Sequencing To Predict Phenotypic Antimicrobial Susceptibility Testing Results among Carbapenem-Resistant Klebsiella pneumoniae Clinical Isolates.
The study identified various AMR genes and mutations in carbapenem-resistant Klebsiella pneumoniae isolates, including bla KPC-2, bla KPC-3, bla NDM-1, bla OXA-48, ampC, qnrB, qnrS, aac(6')-Ib-cr, armA, rmtB, tet(A), tet(B), tet(D), tet(G), sul1, sul2, sul3, dfrA1, dfrA12, dfrA14, dfrA25, dfrA26, dfrA30, oqxA, oqxB, and mgrB, as well as mutations in ompK35, ompK36, gyrA, parC, phoP, phoQ, pmrA, and pmrB, which contribute to resistance against multiple antibiotics.
Expansion of healthcare-associated hypervirulent KPC-2-producing Klebsiella pneumoniae ST11/KL64 beyond hospital settings.
Two carbapenem-resistant K. pneumoniae strains (PINH-4250 and PINH-4900) were recovered from the Pinheiros River, carrying the blaKPC-2 carbapenemase gene and other resistance determinants. They exhibited a broad resistome and hypervirulent behavior.
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