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G-quadruplexes (G4s) are nucleic acids secondary structures that form in DNA or RNA guanine (G)-rich strands. In recent years, the presence of G4s in microorganisms has attracted increasing interest. In prokaryotes, G4 sequences have been reported in several human pathogens. Bacterial enzymes able to process G4s have been identified. In viruses, G4s have been suggested to be involved in key steps of the viral life cycle: They have been associated with the human immunodeficiency virus (HIV), herpes simplex virus 1 (HSV-1), human papilloma virus, swine pseudorabies virus, and other viruses’ genomes. New evidence shows the presence of G4s in parasitic protozoa, such as the causative agent of malaria. G4 binding proteins and mRNA G4s have been implicated in the regulation of microorganisms’ genome replication and translation. G4 ligands have been developed and tested both as tools to study the complexity of G4-mediated mechanisms in the viral life cycle and as therapeutic agents. Moreover, new techniques to study G4 folding and their interactions with proteins have been developed. This Special Issue will focus on G4s present in microorganisms, addressing all the above aspects.

bacteria --- folding --- co-translational refolding --- RecQ helicase --- regulatory element --- conformational dynamics --- G4Hunter --- NDPK --- fluorescence --- pseudorabies virus --- Epstein-Barr virus (EBV) --- structure-activity relationship --- PhenDC3 --- eukaryotic hosts --- Herpesvirus --- translation suppression --- turn-on ligands --- co-transcriptional folding --- Herpesviridae --- G-quadruplex --- nucleoside diphosphate kinase --- nucleic acids --- nucleic acids conformation --- bioinformatics --- protein–DNA interaction --- aptamers --- deinococcus --- Alphaherpesvirinae --- EBNA1 --- G4 --- virus --- human papillomaviruses --- S. cerevisiae --- genome stability --- G-quadruplexes --- metastable structure --- genome evolution --- pyridostatin --- alphaherpesviruses --- structure --- protozoa --- genome --- G-quadruplex ligand --- NMR --- microbes --- DNA --- protein-mRNA interactions --- G-quadruplex formation --- immediate early promoters

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This book covedered high-quality contributions (original research articles or review papers) providing a picture on innovations in microbial fermentative processes, including improvements of quality/safety of fermented foods and beverages, production of high added-values products, and valorization/recovery of agro-food wastes.

Technology: general issues --- Biotechnology --- simultaneous saccharification and cultivation (SSC) --- intensive multiple sequential batch cultivation --- thermotolerant yeast --- Kluyveromyces marxianus --- ethanol production --- smoking with open fire --- PAH --- industrial smoking --- clavulanic acid --- Streptomyces clavuligerus --- cell morphology --- shear stress --- high cell density cultivation (HCDC) --- intensive multiple sequential batch (IMSB) --- cell cultivation --- fed-batch at cell level (FBC) --- S. cerevisiae --- dextrin --- bioreactor --- chain elongation --- carboxylate platform --- medium-chain fatty acids --- carboxylic acids --- mixed culture fermentation --- biocontrol --- Bacillus velezensis --- volatile organic compounds --- vascular wilt pathogens --- GABA --- Indonesian fermented foods --- glutamate decarboxylase --- lactic acid bacteria --- L. plantarum --- feast/famine conditions --- industrial-scale bioreactor --- metabolomics --- metabolic response --- penicillin --- Penicillium chrysogenum --- scale-down --- children --- double fortification --- fermented milk --- iron and zinc --- stunting --- synbiotic --- wine --- HS-SPME-GC/MS --- multivariate statistical analysis --- calibration --- whole-plant corn silage --- bacterial community --- fungal community --- metabolites --- fermentation quality --- aerobic stability --- succession pattern --- fermentation process --- n/a

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This book covedered high-quality contributions (original research articles or review papers) providing a picture on innovations in microbial fermentative processes, including improvements of quality/safety of fermented foods and beverages, production of high added-values products, and valorization/recovery of agro-food wastes.

Technology: general issues --- Biotechnology --- simultaneous saccharification and cultivation (SSC) --- intensive multiple sequential batch cultivation --- thermotolerant yeast --- Kluyveromyces marxianus --- ethanol production --- smoking with open fire --- PAH --- industrial smoking --- clavulanic acid --- Streptomyces clavuligerus --- cell morphology --- shear stress --- high cell density cultivation (HCDC) --- intensive multiple sequential batch (IMSB) --- cell cultivation --- fed-batch at cell level (FBC) --- S. cerevisiae --- dextrin --- bioreactor --- chain elongation --- carboxylate platform --- medium-chain fatty acids --- carboxylic acids --- mixed culture fermentation --- biocontrol --- Bacillus velezensis --- volatile organic compounds --- vascular wilt pathogens --- GABA --- Indonesian fermented foods --- glutamate decarboxylase --- lactic acid bacteria --- L. plantarum --- feast/famine conditions --- industrial-scale bioreactor --- metabolomics --- metabolic response --- penicillin --- Penicillium chrysogenum --- scale-down --- children --- double fortification --- fermented milk --- iron and zinc --- stunting --- synbiotic --- wine --- HS-SPME-GC/MS --- multivariate statistical analysis --- calibration --- whole-plant corn silage --- bacterial community --- fungal community --- metabolites --- fermentation quality --- aerobic stability --- succession pattern --- fermentation process

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The concept of a circular economy relies on waste reduction, valorization, and recycling. Global trends for “green” synthesis of chemicals have positioned the field of enzyme technology and biocatalysis (multi-enzymes and whole-cells) as an alternative for the synthesis of more social- and environmentally-responsible bio-based chemicals. Recent advances in synthetic biology, computational tools, and metabolic engineering have supported the discovery of new enzymes and the rational design of whole-cell biocatalysts. In this book, we highlight these current advances in the field of biocatalysis, with special emphasis on novel enzymes and whole-cell biocatalysts for applications in several industrial biotechnological applications.

Technology: general issues --- 2G ethanol --- hemicellulose usage --- S. cerevisiae --- enzyme immobilization --- cell immobilization --- SHIF --- mannonate dehydratase --- mannose metabolism --- Thermoplasma acidophilum --- mannono-1,4-lactone --- 2-keto-3-deoxygluconate --- aldohexose dehydrogenase --- cyclodextrin glucanotransferases --- large-ring cyclodextrins --- semi rational mutagenesis --- carbohydrate active enzymes --- archaea --- glycosidase --- Sulfolobus solfataricus --- Saccharolobus solfataricus --- Lactobacillus --- β-galactosidase --- immobilization --- cell surface display --- LysM domains --- biocatalysis --- extremophile --- 5-hydroxymethylfurfural --- 5-hydroxymethylfuroic acid --- platform chemicals --- whole cells --- New Delhi metallo-β-lactamase --- NDM-24 --- kinetic profile --- secondary structure --- glycoside hydrolase --- thioglycosides --- Fervidobacterium --- endo-β-1,3-glucanase --- laminarinase --- thermostable --- gene duplication --- cofactor F420 --- deazaflavin --- oxidoreductase --- hydride transfer --- hydrogenation --- asymmetric synthesis --- cofactor biosynthesis --- ω-transaminase --- α-methylbenzylamine --- chiral amine --- biotransformation --- biodiesel --- waste cooking oil --- lipase immobilization --- interfacial activation --- functionalized magnetic nanoparticles --- DNase --- kinetic profiles --- RNase --- semi-rational mutagenesis --- substrate specificity --- engineered Escherichia coli --- flavonoid glucuronides --- multienzyme whole-cell biocatalyst --- organic solvents --- psychrophilic yeast --- hormone-sensitive lipase --- Glaciozyma antarctica --- Antarctica and homology modelling --- keratinase --- serine protease --- metalloprotease --- peptidase --- keratin hydrolysis --- keratin waste --- valorisation --- bioactive peptides --- ene reductase --- enzyme sourcing --- old yellow enzyme --- solvent stability --- machine learning --- flux optimization --- artificial neural network --- synthetic biology --- glycolysis --- metabolic pathways optimization --- cell-free systems --- hydrolase --- lipase --- esterase --- Bacillus subtilis lipase A --- transesterification --- organic solvent --- water activity --- immobilized lipase --- RSM --- fuel properties --- chemo-enzymatic synthesis --- glycosyl transferases --- protein engineering --- carbohydrates --- industrial enzymes --- thermostable enzymes --- glycoside hydrolases --- cell-free biocatalysis --- natural and non-natural multi-enzyme pathways --- bio-based chemicals

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The concept of a circular economy relies on waste reduction, valorization, and recycling. Global trends for “green” synthesis of chemicals have positioned the field of enzyme technology and biocatalysis (multi-enzymes and whole-cells) as an alternative for the synthesis of more social- and environmentally-responsible bio-based chemicals. Recent advances in synthetic biology, computational tools, and metabolic engineering have supported the discovery of new enzymes and the rational design of whole-cell biocatalysts. In this book, we highlight these current advances in the field of biocatalysis, with special emphasis on novel enzymes and whole-cell biocatalysts for applications in several industrial biotechnological applications.

Technology: general issues --- 2G ethanol --- hemicellulose usage --- S. cerevisiae --- enzyme immobilization --- cell immobilization --- SHIF --- mannonate dehydratase --- mannose metabolism --- Thermoplasma acidophilum --- mannono-1,4-lactone --- 2-keto-3-deoxygluconate --- aldohexose dehydrogenase --- cyclodextrin glucanotransferases --- large-ring cyclodextrins --- semi rational mutagenesis --- carbohydrate active enzymes --- archaea --- glycosidase --- Sulfolobus solfataricus --- Saccharolobus solfataricus --- Lactobacillus --- β-galactosidase --- immobilization --- cell surface display --- LysM domains --- biocatalysis --- extremophile --- 5-hydroxymethylfurfural --- 5-hydroxymethylfuroic acid --- platform chemicals --- whole cells --- New Delhi metallo-β-lactamase --- NDM-24 --- kinetic profile --- secondary structure --- glycoside hydrolase --- thioglycosides --- Fervidobacterium --- endo-β-1,3-glucanase --- laminarinase --- thermostable --- gene duplication --- cofactor F420 --- deazaflavin --- oxidoreductase --- hydride transfer --- hydrogenation --- asymmetric synthesis --- cofactor biosynthesis --- ω-transaminase --- α-methylbenzylamine --- chiral amine --- biotransformation --- biodiesel --- waste cooking oil --- lipase immobilization --- interfacial activation --- functionalized magnetic nanoparticles --- DNase --- kinetic profiles --- RNase --- semi-rational mutagenesis --- substrate specificity --- engineered Escherichia coli --- flavonoid glucuronides --- multienzyme whole-cell biocatalyst --- organic solvents --- psychrophilic yeast --- hormone-sensitive lipase --- Glaciozyma antarctica --- Antarctica and homology modelling --- keratinase --- serine protease --- metalloprotease --- peptidase --- keratin hydrolysis --- keratin waste --- valorisation --- bioactive peptides --- ene reductase --- enzyme sourcing --- old yellow enzyme --- solvent stability --- machine learning --- flux optimization --- artificial neural network --- synthetic biology --- glycolysis --- metabolic pathways optimization --- cell-free systems --- hydrolase --- lipase --- esterase --- Bacillus subtilis lipase A --- transesterification --- organic solvent --- water activity --- immobilized lipase --- RSM --- fuel properties --- chemo-enzymatic synthesis --- glycosyl transferases --- protein engineering --- carbohydrates --- industrial enzymes --- thermostable enzymes --- glycoside hydrolases --- cell-free biocatalysis --- natural and non-natural multi-enzyme pathways --- bio-based chemicals