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Record Nr. |
UNINA9910822951103321 |
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Titolo |
Antibiotics : targets, mechanisms and resistance / / edited by Claudio O. Gualerzi [and three others] |
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Pubbl/distr/stampa |
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Weinheim : , : Wiley-VCH, , 2013 |
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ISBN |
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9783527659708 |
3527659706 |
9783527659685 |
3527659684 |
9783527659715 |
3527659714 |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (575 p.) |
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Altri autori (Persone) |
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GualerziClaudio O. <1942-> |
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Disciplina |
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Soggetti |
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Antibiotics |
Anti-infective agents |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Title Page; Copyright; Contents; Preface; List of Contributors; Chapter 1 A Chemist's Survey of Different Antibiotic Classes; 1.1 Introduction; 1.2 Aminoglycosides; 1.3 β-Lactams; 1.4 Linear Peptides; 1.4.1 Glycopeptides-Dalbaheptides; 1.4.2 Lantibiotics; 1.5 Cyclic Peptides; 1.6 Thiazolylpeptides; 1.7 Macrolactones; 1.7.1 Macrolides; 1.7.2 Difimicin; 1.8 Ansamycins-Rifamycins; 1.9 Tetracyclines; 1.10 Oxazolidinones; 1.11 Lincosamides; 1.12 Pleuromutilins; 1.13 Quinolones; 1.14 Aminocoumarins; References; Chapter 2 Antibacterial Discovery: Problems and Possibilities; 2.1 Introduction |
2.2 Why Is Antibacterial Discovery Difficult? The Problems2.3 Target Choice: Essentiality; 2.4 Target Choice: Resistance; 2.5 Cell Entry; 2.6 Screening Strategies; 2.6.1 Empirical Screens; 2.6.2 Phenotypic Whole-Cell Screens; 2.6.3 In Vitro Screens for Single-Target Inhibitors; 2.6.4 Chemicals to Screen; 2.6.4.1 Chemical Collections; 2.7 Natural Products; 2.8 Computational Chemistry, Virtual Screening, Structure- and Fragment-Based Drug Design (SBDD and FBDD); 2.9 Conclusions; References; Chapter 3 Impact of Microbial Natural Products on |
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Antibacterial Drug Discovery; 3.1 Introduction |
3.2 Natural Products for Drug Discovery3.3 Microbial Natural Products; 3.4 The Challenge of Finding Novel Antibiotics from New Natural Sources; 3.5 Workflow for Drug Discovery from Microbial Natural Products; 3.6 Antimicrobial Activities: Targets for Screens; 3.7 Natural Products: A Continuing Source for Inspiration; 3.8 Genome Mining in Natural Product Discovery; 3.9 Conclusions; References; Chapter 4 Antibiotics and Resistance: A Fatal Attraction; 4.1 To Be or Not to Be Resistant: Why and How Antibiotic Resistance Mechanisms Develop and Spread among Bacteria |
4.1.1 Horizontal and Vertical Transmission of Resistance Genes4.2 Bacterial Resistance to Antibiotics by Enzymatic Degradation or Modification; 4.2.1 Antibiotic Resistance by Hydrolytic Enzymes; 4.2.1.1 Î2-Lactamases; 4.2.1.2 Macrolide Esterases; 4.2.1.3 Epoxidases; 4.2.1.4 Proteases; 4.2.2 Antibiotic Transferases Prevent Target Recognition; 4.2.2.1 Acyltransfer; 4.2.2.2 Phosphotransferases; 4.2.2.3 Nucleotidyltransferases; 4.2.2.4 ADP-Ribosyltransferases; 4.2.2.5 Glycosyltransferases; 4.2.3 Redox Enzymes; 4.3 Antibiotic Target Alteration: The Trick Exists and It Is in the Genetics |
4.3.1 Low-Affinity Homologous Genes4.3.1.1 Rifamycin Low-Affinity RpoB; 4.3.1.2 Mutated Genes Conferring Resistance to Quinolone, Fluoroquinolone and Aminocoumarins; 4.3.1.3 PBP2a: A Low-Affinity Penicillin-Binding Protein; 4.3.1.4 Dihydropteroate Synthases Not Inhibited by Sulfonamide; 4.3.2 Chemical Modification of Antibiotic Target; 4.3.2.1 23S rRNA Modification; 4.3.2.2 16S rRNA Modification; 4.3.2.3 Reprogramming Chemical Composition of a Bacterial Cell-Wall Precursor; 4.3.3 Ribosomal Protection and Tetracycline Resistance |
4.3.4 Chromosomal Mutations in Genes Required for Membrane Phospholipid Metabolism: Lipopeptide Resistance |
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Sommario/riassunto |
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Most of the antibiotics now in use have been discovered more or less by chance, and their mechanisms of action have only been elucidated after their discovery. To meet the medical need for next-generation antibiotics, a more rational approach to antibiotic development is clearly needed.Opening with a general introduction about antimicrobial drugs, their targets and the problem of antibiotic resistance, this reference systematically covers currently known antibiotic classes, their molecular mechanisms and the targets on which they act. Novel targets such as cell signaling networks, ribo |
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2. |
Record Nr. |
UNINA9910346663303321 |
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Autore |
Gonsalvi Luca |
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Titolo |
Homogeneous Catalysis and Mechanisms in Water and Biphasic Media / Luca Gonsalvi |
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Pubbl/distr/stampa |
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MDPI - Multidisciplinary Digital Publishing Institute, 2019 |
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Basel, Switzerland : , : MDPI, , 2019 |
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ISBN |
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Descrizione fisica |
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1 electronic resource (158 p.) |
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Soggetti |
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Spectrum analysis, spectrochemistry, mass spectrometry |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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In recent years, water phase chemistry and catalysis has witnessed a renewed interest, also in view of increasing environmental and economical concerns. Novel approaches, materials, and catalysts have been designed, for example, to convey the properties of known transition metal catalysts to their water-soluble analogs, reaching high activities and selectivities. This was possible thanks to new synthetic pathways to molecular catalysts, new mechanistic insights into the role of water as a non-innocent solvent, the use of theoretical methods and advanced engineering techniques, and the application of novel concepts for phase transfer agents in biphasic catalysis. The book contains three review articles and six research articles, addressing topics related to water phase chemistry and catalysis, ranging from the use of cyclodextrins as mass transfer agents in biphasic catalysis, to water-soluble catalyst design for targeted chemical transformation, to the application of ultrasonic monitoring of biocatalysis in water, covering aspects such as chemical synthesis, various aspects of catalysis, and engineering solutions. The range of topics addressed in this book will stimulate the reader's interest and provide a valuable source of information for researchers in academia and industry. |
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