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.
Publication types
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Research Support, Non-U.S. Gov't
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Review
MeSH terms
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Bacteria / chemistry
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Bacteria / metabolism*
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Bacterial Proteins / chemistry
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Bacterial Proteins / classification
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Bacterial Proteins / metabolism
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Glycosyltransferases / chemistry
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Glycosyltransferases / metabolism
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Multienzyme Complexes / chemistry
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Multienzyme Complexes / classification
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Multienzyme Complexes / metabolism
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Penicillin-Binding Proteins / chemistry*
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Penicillin-Binding Proteins / classification
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Penicillin-Binding Proteins / metabolism*
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Peptide Hydrolases / chemistry
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Peptide Hydrolases / metabolism
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Peptidoglycan / biosynthesis*
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Peptidoglycan Glycosyltransferase / chemistry
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Peptidoglycan Glycosyltransferase / metabolism
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Peptidyl Transferases / chemistry
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Peptidyl Transferases / metabolism
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Protein Structure, Tertiary
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beta-Lactamases / metabolism
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beta-Lactams / pharmacology
Substances
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Bacterial Proteins
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Multienzyme Complexes
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Penicillin-Binding Proteins
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Peptidoglycan
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beta-Lactams
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Peptidyl Transferases
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Glycosyltransferases
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Peptidoglycan Glycosyltransferase
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Peptide Hydrolases
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beta-Lactamases