Advances in Microbial Physiology最新文献_第5页

Microbubble intensification of bioprocessing. 微泡强化生物处理。

2区生物学

Advances in Microbial Physiology Pub Date : 2020-01-01 Epub Date: 2020-09-14 DOI: 10.1016/bs.ampbs.2020.07.001

D J Gilmour, W B Zimmerman

{"title":"Microbubble intensification of bioprocessing.","authors":"D J Gilmour, W B Zimmerman","doi":"10.1016/bs.ampbs.2020.07.001","DOIUrl":"https://doi.org/10.1016/bs.ampbs.2020.07.001","url":null,"abstract":"Microbubbles have been involved in industrial processing since the 1970s with the introduction of dissolved air flotation into common practice. The turn of the century saw microbubbles become regularly used in medical imaging. But in bioprocessing, only this decade has seen rapid advances in R&D, with some bioprocesses, particularly in wastewater treatment, adopted at full industrial scale, and others at pilot scale, such as anaerobic digestion and fermentation, which is full industrial scale for many biomanufacturing and pharmaceutical processes. This article reviews the methods of microbubble generation only briefly, as it turns out only one generation method, fluidic oscillation through microporous diffusers, has the requisite features for introduction into full scale fermentation processes. Subsequently, six fundamental physicochemical hydrodynamics mechanisms that have been exploited by microbubble innovations in bioprocessing are presented and analyzed, particularly for the roles they play in bioprocessing applications. Some examples are drawn with applications to microalgal and yeast processing, as well as usage in wastewater treatment processes. Because the smallest microbubbles can increase rates in some of these six fundamental processes by several orders of magnitude over conventional processing methods, with the optimal contacting patterns, the promise for wider exploitation in bioprocessing is substantial.","PeriodicalId":50953,"journal":{"name":"Advances in Microbial Physiology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/bs.ampbs.2020.07.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39694959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Making iron-sulfur cluster: structure, regulation and evolution of the bacterial ISC system. 制造铁硫簇：细菌 ISC 系统的结构、调节和进化。

2区生物学

Advances in Microbial Physiology Pub Date : 2020-01-01 Epub Date: 2020-04-16 DOI: 10.1016/bs.ampbs.2020.01.001

Corentin Baussier, Soufyan Fakroun, Corinne Aubert, Sarah Dubrac, Pierre Mandin, Béatrice Py, Frédéric Barras

{"title":"Making iron-sulfur cluster: structure, regulation and evolution of the bacterial ISC system.","authors":"Corentin Baussier, Soufyan Fakroun, Corinne Aubert, Sarah Dubrac, Pierre Mandin, Béatrice Py, Frédéric Barras","doi":"10.1016/bs.ampbs.2020.01.001","DOIUrl":"10.1016/bs.ampbs.2020.01.001","url":null,"abstract":"Iron sulfur (Fe-S) clusters rank among the most ancient and conserved prosthetic groups. Fe-S clusters containing proteins are present in most, if not all, organisms. Fe-S clusters containing proteins are involved in a wide range of cellular processes, from gene regulation to central metabolism, via gene expression, RNA modification or bioenergetics. Fe-S clusters are built by biogenesis machineries conserved throughout both prokaryotes and eukaryotes. We focus mostly on bacterial ISC machinery, but not exclusively, as we refer to eukaryotic ISC system when it brings significant complementary information. Besides covering the structural and regulatory aspects of Fe-S biogenesis, this review aims to highlight Fe-S biogenesis facets remaining matters of discussion, such as the role of frataxin, or the link between fatty acid metabolism and Fe-S homeostasis. Last, we discuss recent advances on strategies used by different species to make and use Fe-S clusters in changing redox environmental conditions.","PeriodicalId":50953,"journal":{"name":"Advances in Microbial Physiology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/bs.ampbs.2020.01.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37935325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 23

Microbial energy management-A product of three broad tradeoffs. 微生物能量管理——是三种广泛权衡的产物。

2区生物学

Advances in Microbial Physiology Pub Date : 2020-01-01 Epub Date: 2020-10-20 DOI: 10.1016/bs.ampbs.2020.09.001

James B McKinlay, Gregory M Cook, Kiel Hards

{"title":"Microbial energy management-A product of three broad tradeoffs.","authors":"James B McKinlay, Gregory M Cook, Kiel Hards","doi":"10.1016/bs.ampbs.2020.09.001","DOIUrl":"https://doi.org/10.1016/bs.ampbs.2020.09.001","url":null,"abstract":"Wherever thermodynamics allows, microbial life has evolved to transform and harness energy. Microbial life thus abounds in the most unexpected places, enabled by profound metabolic diversity. Within this diversity, energy is transformed primarily through variations on a few core mechanisms. Energy is further managed by the physiological processes of cell growth and maintenance that use energy. Some aspects of microbial physiology are streamlined for energetic efficiency while other aspects seem suboptimal or even wasteful. We propose that the energy that a microbe harnesses and devotes to growth and maintenance is a product of three broad tradeoffs: (i) economic, trading enzyme synthesis or operational cost for functional benefit, (ii) environmental, trading optimization for a single environment for adaptability to multiple environments, and (iii) thermodynamic, trading energetic yield for forward metabolic flux. Consideration of these tradeoffs allows one to reconcile features of microbial physiology that seem to opposingly promote either energetic efficiency or waste.","PeriodicalId":50953,"journal":{"name":"Advances in Microbial Physiology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/bs.ampbs.2020.09.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39606189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Zymomonas mobilis metabolism: Novel tools and targets for its rational engineering. 活动单胞菌代谢:合理工程的新工具和目标。

2区生物学

Advances in Microbial Physiology Pub Date : 2020-01-01 Epub Date: 2020-10-22 DOI: 10.1016/bs.ampbs.2020.08.001

Uldis Kalnenieks, Katherine M Pappas, Katja Bettenbrock

{"title":"Zymomonas mobilis metabolism: Novel tools and targets for its rational engineering.","authors":"Uldis Kalnenieks, Katherine M Pappas, Katja Bettenbrock","doi":"10.1016/bs.ampbs.2020.08.001","DOIUrl":"https://doi.org/10.1016/bs.ampbs.2020.08.001","url":null,"abstract":"Zymomonas mobilis is an α-proteobacterium that interests the biofuel industry due to its perfect ethanol fermentation yields. From its first description as a bacterial isolate in fermented alcoholic beverages to date, Z. mobilis has been rigorously studied in directions basic and applied. The Z. mobilis powerful Entner-Doudoroff glycolytic pathway has been the center of rigorous biochemical studies and, aside from ethanol, it has attracted interest in terms of high-added-value chemical manufacturing. Energetic balances and the effects of respiration have been explored in fundamental directions as also in applications pursuing strain enhancement and the utilization of alternative carbon sources. Metabolic modeling has addressed the optimization of the biochemical circuitry at various conditions of growth and/or substrate utilization; it has been also critical in predicting desirable end-product yields via flux redirection. Lastly, stress tolerance has received particular attention, since it directly determines biocatalytical performance at challenging bioreactor conditions. At a genetic level, advances in the genetic engineering of the organism have brought forth beneficial manipulations in the Z. mobilis gene pool, e.g., knock-outs, knock-ins and gene stacking, aiming to broaden the metabolic repertoire and increase robustness. Recent omic and expressional studies shed light on the genomic content of the most applied strains and reveal landscapes of activity manifested at ambient or reactor-based conditions. Studies such as those reviewed in this work, contribute to the understanding of the biology of Z. mobilis, enable insightful strain development, and pave the way for the transformation of Z. mobilis into a consummate organism for biomass conversion.","PeriodicalId":50953,"journal":{"name":"Advances in Microbial Physiology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/bs.ampbs.2020.08.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39606190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Multiple degrees of separation in the central pathways of the catabolism of aromatic compounds in fungi belonging to the Dikarya sub-Kingdom. 在属于Dikarya亚王国的真菌中芳香化合物分解代谢的中心途径中存在多种程度的分离。

2区生物学

Advances in Microbial Physiology Pub Date : 2019-01-01 DOI: 10.1016/BS.AMPBS.2019.07.003

T. M. Martins, C. Martins, C. Silva Pereira

引用次数: 5

The function, biogenesis and regulation of the electron transport chains in Campylobacter jejuni: New insights into the bioenergetics of a major food-borne pathogen. 空肠弯曲杆菌(Campylobacter jejuni)电子传递链的功能、生物发生和调控:一种主要食源性病原体生物能量学的新见解。

2区生物学

Advances in Microbial Physiology Pub Date : 2019-01-01 Epub Date: 2019-03-08 DOI: 10.1016/bs.ampbs.2019.02.003

Aidan J Taylor, David J Kelly

{"title":"The function, biogenesis and regulation of the electron transport chains in Campylobacter jejuni: New insights into the bioenergetics of a major food-borne pathogen.","authors":"Aidan J Taylor, David J Kelly","doi":"10.1016/bs.ampbs.2019.02.003","DOIUrl":"https://doi.org/10.1016/bs.ampbs.2019.02.003","url":null,"abstract":"Campylobacter jejuni is a zoonotic Epsilonproteobacterium that grows in the gastrointestinal tract of birds and mammals, and is the most frequent cause of food-borne bacterial gastroenteritis worldwide. As an oxygen-sensitive microaerophile, C. jejuni has to survive high environmental oxygen tensions, adapt to oxygen limitation in the host intestine and resist host oxidative attack. Despite its small genome size, C. jejuni is a versatile and metabolically active pathogen, with a complex and highly branched set of respiratory chains allowing the use of a wide range of electron donors and alternative electron acceptors in addition to oxygen, including fumarate, nitrate, nitrite, tetrathionate and N- or S-oxides. Several novel enzymes participate in these electron transport chains, including a tungsten containing formate dehydrogenase, a Complex I that uses flavodoxin and not NADH, a periplasmic facing fumarate reductase and a cytochrome c tetrathionate reductase. This review presents an updated description of the composition and bioenergetics of these various respiratory chains as they are currently understood, including recent work that gives new insights into energy conservation during electron transport to various alternative electron acceptors. The regulation of synthesis and assembly of the electron transport chains is also discussed. A deeper appreciation of the unique features of the respiratory systems of C. jejuni may be helpful in informing strategies to control this important pathogen.","PeriodicalId":50953,"journal":{"name":"Advances in Microbial Physiology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/bs.ampbs.2019.02.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37275017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

New insights into the molecular physiology of sulfoxide reduction in bacteria. 细菌中亚砜还原分子生理学的新见解。

2区生物学

Advances in Microbial Physiology Pub Date : 2019-01-01 DOI: 10.1016/BS.AMPBS.2019.05.001

U. Kappler, M. Nasreen, A. McEwan

引用次数: 18

Escherichia coli DosC and DosP: a role of c-di-GMP in compartmentalized sensing by degradosomes. 大肠杆菌DosC和DosP: c-二gmp在降解体区隔感知中的作用。

2区生物学

Advances in Microbial Physiology Pub Date : 2019-01-01 DOI: 10.1016/bs.ampbs.2019.05.002

M. Gilles‐Gonzalez, E. H. Sousa

引用次数: 4

The functional diversity of the prokaryotic sulfur carrier protein TusA. 原核硫载体蛋白TusA的功能多样性。

2区生物学

Advances in Microbial Physiology Pub Date : 2019-01-01 DOI: 10.1016/BS.AMPBS.2019.07.004

T. Tanabe, S. Leimkühler, C. Dahl

引用次数: 18

Hydrogenases and H₂ metabolism in sulfate-reducing bacteria of the Desulfovibrio genus. 脱硫弧菌属硫酸盐还原菌的氢化酶和H2代谢。

2区生物学

Advances in Microbial Physiology Pub Date : 2019-01-01 Epub Date: 2019-04-22 DOI: 10.1016/bs.ampbs.2019.03.001

Carole Baffert, Arlette Kpebe, Luisana Avilan, Myriam Brugna

引用次数: 27