Browse AMR Genes
Explore antimicrobial resistance genes from the literature
Explore antimicrobial resistance genes from the literature
chloramphenicol acetyltransferase
Overview
| Allele | Database | Papers | Drug Classes | Organisms | Countries | Years | Sequence Accession | Protein Accession |
|---|---|---|---|---|---|---|---|---|
| cat1 | Reslit | 21 | Chloramphenicol | E. coli +19 | Galápagos Archipelago, Korea, India, Egypt, South Korea, South Africa, West Cameroon, Germany, Georgia, USA|Georgia, Kenya, Brazil, Anhui, China, Mexico, Nepal, Pakistan|China|United States|United Kingdom|Canada|Australia|Spain|Denmark|UAE|Ethiopia|India|South Asia, Northern Adriatic Sea, Central Zone of Mexico|Mexico, Inner Mongolia|Inner Mongolia, China, China, Europe |
| 2010, 2011, 2014, 2017, 2018, 2020, 2021, 2022, 2023, 2024, 2025 |
| MT334396|MT334397|MT334398 |
| - |
| Cat1 | Reslit | 1 | Chloramphenicol | Klebsiella pneumoniae | China | 2025 | CCTCC M 2025022|CCTCC M 2025094|BankIt2933679|Seq1 PV296009|BankIt2936412|Seq1 PV296010 | - |
Tracking acquired antibiotic resistance in commensal bacteria of Galápagos land iguanas: no man, no resistance.
Two E. coli isolates from Galápagos land iguanas were found to carry acquired resistance genes, including tet(B), aadB, aacA4, cat1, tet(A), blaTEM, and sul1, indicating human-related contamination in a remote ecosystem.
Antimicrobial resistance, virulence-associated genes, and pulsed-field gel electrophoresis profiles of Salmonella enterica subsp. enterica serovar Typhimurium isolated from piglets with diarrhea in Korea.
The study identified multiple antimicrobial resistance genes in Salmonella enterica subsp. enterica serovar Typhimurium isolates from piglets with diarrhea in Korea, including bla PSE, bla TEM, cat1, cat2, floR, strA, strB, aadA, sulI, sulII, tetA, tetC, and tetG.
Phylogenetic distribution and prevalence of genes encoding class I Integrons and CTX-M-15 extended-spectrum β-lactamases in Escherichia coli isolates from healthy humans in Chandigarh, India.
The study identifies the presence of class 1 integrons and bla CTX-M-15 genes in commensal E. coli isolates from healthy individuals in Chandigarh, India. It also detects several gene cassettes conferring resistance to trimethoprim, streptomycin, spectinomycin, streptothricin, chloramphenicol, tetracycline, and sulfonamides.
Epidemiological, molecular characterization and antibiotic resistance of Salmonella enterica serovars isolated from chicken farms in Egypt.
The study identified various AMR genes in Salmonella enterica serovars isolated from chicken farms in Egypt, including blaTEM, aadA2, floR, cat1, sul1, sul3, tetC, tetA, and intI, which confer resistance to ampicillin, streptomycin, chloramphenicol, sulfamethoxazole, tetracycline, and multiple antibiotics.
Interrelationship between tetracycline resistance determinants, phylogenetic group affiliation and carriage of class 1 integrons in commensal Escherichia coli isolates from cattle farms.
The study identified tetracycline resistance genes tet(A) and tet(B) as the most common in commensal E. coli isolates from cattle farms, along with gene cassettes such as aadA1, dfrA1, dfrA12, sul1, cat1, and floR associated with class 1 integrons.
Prevalence and distribution of antimicrobial resistance determinants of Escherichia coli isolates obtained from meat in South Africa.
The study identified several AMR genes in E. coli isolates from meat in South Africa, including aadA, strA, aph(3)-Ia, aph(3)-IIa, aac(3)-IIa, blaTEM, blaZ, ampC, cat1, cat2, cmlA1, sul1, sul2, tetA, tetB, tetC, tetD, and tetM, which confer resistance to various antibiotics such as streptomycin, kanamycin, neomycin, gentamicin, amoxicillin, ampicillin, chloramphenicol, cotrimoxazole, and tetracycline.
Profiling Virulence and Antimicrobial Resistance Markers of Enterovirulent Escherichia Coli from Fecal Isolates of Adult Patients with Enteric Infections in West Cameroon.
The study identified several AMR genes and mutations in enterovirulent E. coli isolates from adult patients in Cameroon, including blaTEM, blaOxa, cat1, cat2, tetB, tetA, tetG, sul2, and dfrA12, along with mutations in gyrA and parC contributing to quinolone resistance.
Genetic but No Phenotypic Associations between Biocide Tolerance and Antibiotic Resistance in Escherichia coli from German Broiler Fattening Farms.
The study identified various AMR genes in E. coli isolates from German broiler farms, including beta-lactamases (blaTEM-1A, blaTEM-1B, blaTEM-1C, blaCTX-M-1, blaCMY-2), quinolone resistance genes (qnrB19, qnrS1), chloramphenicol resistance gene (cat1), tetracycline resistance genes (tetA, tetB), sulfonamide resistance genes (sul1, sul2), dihydrofolate reductase genes (drfA1, drfA5, drfA14, drfA17), aminoglycoside resistance gene (aadA1), and efflux pump genes (sugEp, qacEΔ1, mdfA).
Analysis of Salmonella enterica Isolated from a Mixed-Use Watershed in Georgia, USA: Antimicrobial Resistance, Serotype Diversity, and Genetic Relatedness to Human Isolates.
The study identified multiple antimicrobial resistance genes in Salmonella enterica isolates from a mixed-use watershed in Georgia, USA, including bla CMY-2, aadA2, strA, strB, sul1, sul2, tetA, tetC, floR, and dfrA12, which conferred resistance to various antibiotics such as ceftiofur, ceftriaxone, streptomycin, sulfisoxazole, tetracycline, chloramphenicol, and trimethoprim.
Antimicrobial Resistance and Virulence Characteristics of Klebsiella pneumoniae Isolates in Kenya by Whole-Genome Sequencing.
The study identified several AMR genes in K. pneumoniae isolates from Kenya, including blaCTX-M-15, blaTEM-181, blaOXA-181, blaNDM-1, mcr-8, armA, rmtF, aac(6')-Ib-cr, aph(3")-ib, aph(6)-id, dfrA, sul2, qnrB, tetA, and catII, which confer resistance to various antibiotics such as beta-lactams, carbapenems, aminoglycosides, fluoroquinolones, tetracyclines, and chloramphenicol.
Molecular characterization and biofilm-formation analysis of Listeria monocytogenes, Salmonella spp., and Escherichia coli isolated from Brazilian swine slaughterhouses.
The study identified various antimicrobial resistance genes in E. coli and Salmonella Typhi isolates from Brazilian swine slaughterhouses, including ampC, blaSHV, cat1, clmA, MCR-1, MCR-3, tet(A), tet(B), tet(C), tet(M), and sulI. These genes conferred resistance to multiple antibiotics such as ampicillin, amoxicillin, chloramphenicol, tetracycline, doxycycline, colistin, and sulfonamide.
Prevalence and Characterization of Salmonella Isolated from Chickens in Anhui, China.
The study identified several AMR genes in Salmonella isolates from chickens in Anhui, China, including blaTEM, blaCMY-2, aadA, strA, aph(3')-IIa, aac(6')-Ib-cr, qnrB, qnrS, sul1, sul2, tetA, tetB, cat1, and floR. These genes were associated with resistance to various antibiotics such as ampicillin, cephalosporins, streptomycin, gentamicin, amikacin, fluoroquinolones, sulfamethoxazole, tetracycline, chloramphenicol, and florfenicol.
Regulation Transcriptional of Antibiotic Resistance Genes (ARGs) in Bacteria Isolated from WWTP.
The study identifies several antibiotic resistance genes (ARGs) in bacteria isolated from wastewater treatment plants, including sul, qnr, cat1, aadA1, sat-1, tetA, ermB, and act, which confer resistance to sulfonamides, quinolones, chloramphenicol, streptomycin/spectinomycin, kanamycin, tetracycline, macrolides, and beta-lactams, respectively.
Antimicrobial resistance of avian pathogenic Escherichia coli isolated from broiler, layer, and breeder chickens.
The study identified multiple antibiotic resistance genes in avian pathogenic Escherichia coli (APEC) isolates from commercial chickens in Nepal, including blaTEM, sul1, qnrA, tetB, cat1, ereA, mcr1, and aac(3)-IV, which confer resistance to various antimicrobial agents.
Combatting extensively drug-resistant Salmonella: a global perspective on outbreaks, impacts, and control strategies.
The paper discusses the emergence and global spread of extensively drug-resistant (XDR) Salmonella, highlighting the resistance mechanisms involving genes such as blaCTX-M-15, floR, cat1, cat2, strA, strB, aacC(3), aadA, ant(3")-Ia, aph(3)-IIa, tet(A), tet(B), tet(D), tet(G), tet(H), dfrA10, dhfrXII, sul1, sul2, sul3, mphA, and ermB.
Jellyfish blooms-an overlooked hotspot and potential vector for the transmission of antimicrobial resistance in marine environments.
The study identifies that gelatinous zooplankton organic matter (GZ-OM) from jellyfish blooms acts as a hotspot for the proliferation of antimicrobial resistance genes (ARGs) and mobile genetic elements (MGEs) in marine microbial communities. Key bacterial players like Vibrio spp. were found to harbor multiple ARGs, including multidrug efflux pumps and tetracycline and quinolone resistance genes.
Intestinal and Extraintestinal Pathotypes of Escherichia coli Are Prevalent in Food Prepared and Marketed on the Streets from the Central Zone of Mexico and Exhibit a Differential Phenotype of Resistance Against Antibiotics.
The study identifies multiple antibiotic resistance genes in E. coli isolates from street-prepared food in Mexico, including strA, sul1, catA1, floR, qnrS, and tetA, which confer resistance to streptomycin, sulfonamides, chloramphenicol, quinolones, and tetracycline.
Prevalence and antimicrobial resistance of Salmonella enterica isolated from cattle farms in Inner Mongolia.
The study identified several AMR genes in Salmonella enterica isolates from Inner Mongolia, including bla TEM-1, cmlA, tetA, tetB, tetM, aadA2, aph(3')-IIa, aacC4, aac(3)-IIa, sul1, sul3, oqxA, and oqxB, which confer resistance to beta-lactams, chloramphenicol, tetracyclines, aminoglycosides, sulfonamides, and quinolones.
Identification and preclinical efficacy evaluation of two lytic bacteriophages targeting highly virulent and multidrug-resistant Klebsiella pneumoniae.
The study identifies two lytic bacteriophages, vB_KpnP_XY3 and vB_KpnP_XY4, effective against multidrug-resistant Klebsiella pneumoniae. These phages demonstrate broad temperature and pH tolerance, chloroform resistance, and potent lytic activity against MDR K. pneumoniae strains, significantly reducing bacterial load and inflammation in a murine pneumonia model.
Detection and characterization of heteroresistance to chloramphenicol in Klebsiella pneumoniae isolates.
The study identifies cat1 and floR genes as pivotal in chloramphenicol heteroresistance in Klebsiella pneumoniae isolates.
Structural basis for antibiotic resistance by chloramphenicol acetyltransferase type A in Staphylococcus aureus.
The study characterizes saCAT1, a type-A chloramphenicol acetyltransferase from Staphylococcus aureus, which confers resistance to chloramphenicol through enzymatic inactivation. The structural and biochemical analysis reveals the molecular basis of its catalytic activity and substrate specificity.
Antibiotic resistance in mastitis-causing bacteria: Exploring antibiotic-resistance genes, underlying mechanisms, and their implications for dairy animal and public health.
The study identifies several AMR genes and mutations in Staphylococcus aureus and coagulase-negative staphylococci associated with mastitis, including blaZ, mecA, tetK, tetM, aphA3, aacA-aphD, aadD, ermA, msrA, mphC, lnuB, and vanA, which confer resistance to various antibiotics such as β-lactams, tetracyclines, aminoglycosides, macrolides, and glycopeptides.
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