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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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Dissertation

Characterization of PknB, a Putative Eukaryotic-type Serine/threonine Protein Kinase in Streptococcus mutans

Deanna Del Re
TL;DR: PknB in S. mutans appears to play an important role in cell wall biosynthesis, response to membrane stress and/or regulation of cell membrane, and more sensitive to cell walland membrane-targeting antibiotics compared to wild-type.
Journal ArticleDOI

Proteomic Charting of Imipenem Adaptive Responses in a Highly Carbapenem Resistant Clinical Enterobacter roggenkampii Isolate.

TL;DR: In this paper, the authors charted the responses of the E. roggenkampii ST232 isolate to the carbapenem imipenem, using a'stable isotope labeling of amino acids in cell culture' approach for quantitative mass spectrometry.
Dissertation

Role of antimicrobial peptides in human innate defense against bacteria

TL;DR: This review focuses on the mechanisms of direct antimicrobial effects against Gram positive and Gram negative bacteria of the main human AMPs, α-defensins, β-defendersins, the cathelicidin LL-37 and the histatins.
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Phenotypic and genotypic detection of resistance mechanisms in carbapenem-resistant gram-negative bacteria isolated from Egyptian ICU patients with first emergence of NDM-1 producing Klebsiella oxytoca

TL;DR: In this article , a study aimed to determine the rate of carbapenem resistance among Gram-negative bacteria collected from patients in ICUs and to identify their resistance mechanisms using phenotypic and genotypic methods.
Dissertation

Regulation of the MexAB-OprM Multidrug Efflux System of Pseudomonas aeruginosa: Involvement of Pentachlorophenol and Plant Chemicals

TL;DR: This paper aims to provide a chronology of the events leading to and following the publication of this book and some of the journal articles in which it was first published.
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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