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ARG-ANNOT, a New Bioinformatic Tool To Discover Antibiotic Resistance Genes in Bacterial Genomes

TLDR
A concise database for BLAST using a Bio-Edit interface that can detect AR genetic determinants in bacterial genomes and can rapidly and easily discover putative new AR geneticeterminants is created.
Abstract
ARG-ANNOT (Antibiotic Resistance Gene-ANNOTation) is a new bioinformatic tool that was created to detect existing and putative new antibiotic resistance (AR) genes in bacterial genomes. ARG-ANNOT uses a local BLAST program in Bio-Edit software that allows the user to analyze sequences without a Web interface. All AR genetic determinants were collected from published works and online resources; nucleotide and protein sequences were retrieved from the NCBI GenBank database. After building a database that includes 1,689 antibiotic resistance genes, the software was tested in a blind manner using 100 random sequences selected from the database to verify that the sensitivity and specificity were at 100% even when partial sequences were queried. Notably, BLAST analysis results obtained using the rmtF gene sequence (a new aminoglycoside-modifying enzyme gene sequence that is not included in the database) as a query revealed that the tool was able to link this sequence to short sequences (17 to 40 bp) found in other genes of the rmt family with significant E values. Finally, the analysis of 178 Acinetobacter baumannii and 20 Staphylococcus aureus genomes allowed the detection of a significantly higher number of AR genes than the Resfinder gene analyzer and 11 point mutations in target genes known to be associated with AR. The average time for the analysis of a genome was 3.35 ± 0.13 min. We have created a concise database for BLAST using a Bio-Edit interface that can detect AR genetic determinants in bacterial genomes and can rapidly and easily discover putative new AR genetic determinants.

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Genomic analysis of diversity, population structure, virulence, and antimicrobial resistance in Klebsiella pneumoniae, an urgent threat to public health

TL;DR: The DNA sequence of K. pneumoniae isolates from around the world is determined and it is shown that there is a wide spectrum of diversity, including variation within shared sequences and gain and loss of whole genes, and there is an unrecognized association between the possession of specific gene profiles associated with virulence and antibiotic resistance.
Journal ArticleDOI

SRST2: Rapid genomic surveillance for public health and hospital microbiology labs

TL;DR: This work presents SRST2, a read mapping-based tool for fast and accurate detection of genes, alleles and multi-locus sequence types (MLST) from WGS data, which is highly accurate and outperforms assembly-based methods in terms of both gene detection and allele assignment.
References
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Journal ArticleDOI

A pmrA Constitutive Mutant Sensitizes Escherichia coli to Deoxycholic Acid

TL;DR: A missense mutation at codon 53 within the pmrA (basR) gene that results in a G-to-V substitution is revealed that regulates genes whose products remodel the composition and charge of lipid A and hence the barrier properties of the outer membrane.
Journal ArticleDOI

RmtF, a New Member of the Aminoglycoside Resistance 16S rRNA N7 G1405 Methyltransferase Family

TL;DR: A multidrug-resistant clinical isolate Klebsiella pneumoniae BM4686 was highly resistant to 4,6-disubstituted 2-deoxystreptamines and to fortimicin.
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Accumulation of mutations in both gyrB and parE genes is associated with high-level resistance to novobiocin in Staphylococcus aureus.

TL;DR: These findings demonstrate that DNA gyrase is the primary target and that topoisomerase IV is the secondary target for novobiocin and that the accumulation of point mutations in both the gyrB and the parE genes is associated with high-level resistance to novobocin in S. aureus.
Journal ArticleDOI

Antibiotic Resistance Genes Online (ARGO): a Database on vancomycin and beta-lactam resistance genes.

TL;DR: ARGO is the first attempt to compile the resistance gene sequence data with state specific information for vancomycin and βlactams, designed as a resource to enhance research on the prevalence and spread of antibiotic resistance genes.
Journal ArticleDOI

Characteristics of embB mutations in multidrug-resistant Mycobacterium tuberculosis isolates in Henan, China

TL;DR: The results suggest embB mutations alone are not sufficient for the development of full resistance to ethambutol in M. tuberculosis and mutations other than embB are also needed, and confirms the importance of mutations at embB406 and embB497 as hotspots, in addition to embB306, for detecting eth Ambutol resistance.
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