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Open AccessJournal ArticleDOI

The penicillin-binding proteins: structure and role in peptidoglycan biosynthesis

TLDR
An overview of the content in PBPs of some bacteria is provided with an emphasis on comparing the biochemical properties of homologous PBPs (orthologues) belonging to different bacteria.
Abstract
Penicillin-binding proteins (PBPs) have been scrutinized for over 40 years. Recent structural information on PBPs together with the ongoing long-term biochemical experimental investigations, and results from more recent techniques such as protein localization by green fluorescent protein-fusion immunofluorescence or double-hybrid assay, have brought our understanding of the last stages of the peptidoglycan biosynthesis to an outstanding level that allows a broad outlook on the properties of these enzymes. Details are emerging regarding the interaction between the peptidoglycan-synthesizing PBPs and the peptidoglycan, their mesh net-like product that surrounds and protects bacteria. This review focuses on the detailed structure of PBPs and their implication in peptidoglycan synthesis, maturation and recycling. An overview of the content in PBPs of some bacteria is provided with an emphasis on comparing the biochemical properties of homologous PBPs (orthologues) belonging to different bacteria.

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Journal ArticleDOI

Rapid Approach for Detection of Antibiotic Resistance in Bacteria Using Vibrational Spectroscopy

TL;DR: The oxacillin-induced changes in chemical composition of susceptible bacteria, preceding (and leading to) inhibition of growth, included an increase in the relative content of nucleic acids, alteration in α-helical/β-sheet protein ratio, structural changes in carbohydrates and significant thickening of the cell wall.
Journal ArticleDOI

Population structure-guided profiling of antibiotic resistance patterns in clinical Listeria monocytogenes isolates from Germany identifies pbpB3 alleles associated with low levels of cephalosporin resistance

TL;DR: This study is the first population structure-guided analysis of antimicrobial resistance in recent clinical isolates and confirms the importance of penicillin binding protein B3 (PBP B3) for the high level of intrinsic cephalosporin resistance of L. monocytogenes on a population-wide scale.
Journal ArticleDOI

Genomic and Proteomic Analyses of Salmonella enterica Serovar Enteritidis Identifying Mechanisms of Induced de novo Tolerance to Ceftiofur.

TL;DR: Genetic, subcellular localization, and abundance changes of specific regulators of transcription, translation, and post-translational dynamics in the derived ceftiofur tolerant lineages decrease metabolic strain on cell walls and enhance periplasmic envelop stability against stress, and can inform policies to combat antibiotic tolerance and minimize induction of de novo tolerance.
Journal ArticleDOI

The pathogenic microbial flora and its antibiotic susceptibility pattern in odontogenic infections

TL;DR: The aim of this paper was to evaluate the literature and to evidence the most frequent locations of odontogenic head and neck infections, the dominant pathogenic microbial flora, the genetic mutations and metabolic changes necessary for bacteria in order to aquire antibiotic resistance and as well its susceptibility and resistance to common antibiotics.
Journal ArticleDOI

Phenotypic characterization of a novel double knockout PknI/DacB2 from Mycobacterium tuberculosis

TL;DR: The data suggest that both pknI and dacB2 play an important role in the maintenance of colony morphology, cell wall permeability and integrity of M. tuberculosis.
References
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Book

Handbook of proteolytic enzymes

TL;DR: In this paper, Serine Peptidases with a Ser/Lys Catalytic Dyad (SC) are described, as well as their relation to the Nodavirus Coat Protein.

The Handbook of proteolytic enzymes

TL;DR: (Abbreviated Contents Including Section Headings:)
Journal ArticleDOI

Peptidoglycan structure and architecture

TL;DR: In several species examined, the fine structure of the peptidoglycan significantly varies with the growth conditions, and the different models for the architecture are discussed with respect to structural and physical parameters.
Journal ArticleDOI

Growth of the Stress-Bearing and Shape-Maintaining Murein Sacculus of Escherichia coli

TL;DR: A model is presented that postulates that maintenance of bacterial shape is achieved by the enzyme complex copying the preexisting murein sacculus that plays the role of a template.
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