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

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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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Structure and reconstitution of a hydrolase complex that may release peptidoglycan from the membrane after polymerization.

TL;DR: This work shows that a Staphylococcus aureus cell wall hydrolase and a membrane protein that contains eight transmembrane helices form a complex that may function as a peptidoglycan release factor and proposes that this complex functions to detach newly synthesized peptidlycercan polymer from the cell membrane to complete integration into the cell wall matrix.
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Staphylococcus aureus Cell Wall Biosynthesis Modulates Bone Invasion and Osteomyelitis Pathogenesis

TL;DR: In this article, the authors investigated select S. aureus cell wall synthesis mutants (Δpbp3, Δatl, and ΔmreC) and surface adhesin mutants ( ΔclfA and ΔsasC) for nanopore propagation in vitro and osteomyelitis pathogenesis in vivo.
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Resistance determinants and their genetic context in enterobacteria from a longitudinal study of pigs reared under various husbandry conditions.

TL;DR: In this paper, the authors evaluated the impact of conventional, organic, and other antibiotic-free husbandry practices on the frequency and nature of antimicrobial resistance genes and multidrug-resistant enterobacteria.
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Target-oriented photofunctional nanoparticles (TOPFNs) for selective photodynamic inactivation of Methicillin-resistant Staphylococcus aureus (MRSA).

TL;DR: The TOPFNs were designed as dispersible PDI agent in biological condition, which was effectively used for selectively capturing and killing of MRSA and showed a selective killing ability for MRSA with minimum damage to L-929 cells.
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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