Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Lecture

Microbial Metabolic Diversity

In course

ENV-202: Microbiology for engineers

"Microbiology for engineers" covers the main microbial processes that take place in the environment and in treatment systems. It presents elemental cycles that are catalyzed by microorganisms and that have a major impact on planet Earth. ...

Description

This lecture covers the metabolic diversity of microorganisms, focusing on the different types of bacteria, their energy sources, electron donors and acceptors, and carbon sources. It explains the role of key molecules like NAD, FAD, and quinones in redox reactions, as well as the importance of ATP synthase and oxidative phosphorylation in energy generation.

Instructors (4)

Julien Maillard

2011 - present: Research associate at the Laboratory for Environmental Biotechnology (LBE, IIE-ENAC, EPFL) 2007 - 2010: Postdoctoral Fellow at the Laboratory for Environmental Biotechnology (LBE, IIE-ENAC, EPFL) 2005 - 2006: Postdoctoral Fellow at the University of East Anglia (UEA, Norwich, UK) 2000 - 2004: PhD thesis at the Laboratory for Environmental Biotechnology (LBE) 1995 - 2000: B.sc & M.sc at the Swiss Federal Institute for Technology, Zurich (ETHZ)

Rizlan Bernier-Latmani

HIGHER EDUCATION Summer course: Advances in Genome Technology and Bioinformatics Course at the Marine Biology Laboratory in Woods Hole, MA. October 2005. Ph.D. 2001 Civil and Environmental Engineering, Stanford University, CA (Advisor, Jim Leckie, Biodegradation of uranyl (UO22 )-complexed citrate and implications for uranyl mobility in the subsurface) M.S. 1995 Civil and Environmental Engineering, Stanford University, CA B.S. 1993 Natural Resources with Honors, Cornell University, Ithaca, NY PROFESSIONAL EMPLOYMENT 2013-present Associate professor with tenure, School of Architecture, Civil and Environmental Engineering, Swiss Federal Institute of Technology, Lausanne 2005-2013 Assistant professor tenure track, School of Architecture, Civil and Environmental Engineering, Swiss Federal Institute of Technology, Lausanne 2001-2005 Post-Graduate Researcher, Scripps Institution of Oceanography, La Jolla, CA (PI: Brad Tebo) 1995-2001 Graduate Research Assistant, Stanford University (Advisor: Jim Leckie) RESEARCH INTERESTS Gemicrobiology, metal-bacteria interactions, biological reduction and oxidation of metals, biological nanoparticle formation; Characterization of microbial communities in terrestrial environments; Using genomic, microscopic and spectroscopic tools to understand metal transformations by microorganisms. ACADEMIC HONORS Rotary Foundation University Professor grant, 2004. Swiss National Science Foundation Post-doctoral Fellowship, 2001. Leon B. Reynolds Memorial Scholarship in the School of Engineering at Stanford University, 1995-96. Graduated with Honors from Cornell University, 1993. BIBLIOMETRY http://www.researcherid.com/rid/E-4398-2011 ResearcherID: E-4398-2011

Christof Holliger

Originaire d'Adliswil, Christof Holliger est né en 1959. Diplômé de l'ETHZ en biologie en 1984, il mène des travaux de recherche dans le domaine de la microbiologie environnementale à l'Université d'Agriculture de Wageningen (Pays-Bas) où il obtient son doctorat en Science de l'environnement en 1992. En 1992, il retourne en Suisse engagé comme collaborateur scientifique et chef de groupe à l'Institut Fédéral pour l'Aménagement, l'Epuration et la Protection des Eaux (EAWAG) à Kastanienbaum. Il y continue ses recherches sur la déchloruration réductrice, commencées aux Pays-Bas, et dirige des travaux sur la réduction des composés nitroaromatiques, la réduction du fer et la méthanogenèse psychrophile dans les sédiments des lacs. En octobre 1998, il est nommé professeur assistant en biotechnologie environnementale au Département de génie rural de l'EPFL. Ses recherches visent l'application des micro-organismes anaérobies pour le traitement des eaux résiduaires. En novembre 2004, il est nommé professeur associé et devient responsable du laboratoire de biotechnologie environnementale à la Faculté de l'Environnement naturel, architectural et construit. L'utilisation des techniques de la biologie moléculaire pour la caractérisation des communautés microbiennes impliquées dans le biotraitement de l'air, des eaux et des sols pollués est un outil clé dans les différents projets de recherche visants le développement des nouveaux procédés de traitement.

Official source

Ontological neighbourhood

Biology

Cell biology: Cell metabolism

Related concepts (32)

Metabolism

Metabolism (məˈtæbəlɪzəm, from μεταβολή metabolē, "change") is the set of life-sustaining chemical reactions in organisms. The three main functions of metabolism are: the conversion of the energy in food to energy available to run cellular processes; the conversion of food to building blocks for proteins, lipids, nucleic acids, and some carbohydrates; and the elimination of metabolic wastes. These enzyme-catalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments.

Electron transport chain

An electron transport chain (ETC) is a series of protein complexes and other molecules that transfer electrons from electron donors to electron acceptors via redox reactions (both reduction and oxidation occurring simultaneously) and couples this electron transfer with the transfer of protons (H+ ions) across a membrane. The electrons that are transferred from NADH and FADH2 to the ETC involves four multi-subunit large enzymes complexes and two mobile electron carriers.

Microbial metabolism

Microbial metabolism is the means by which a microbe obtains the energy and nutrients (e.g. carbon) it needs to live and reproduce. Microbes use many different types of metabolic strategies and species can often be differentiated from each other based on metabolic characteristics. The specific metabolic properties of a microbe are the major factors in determining that microbe's ecological niche, and often allow for that microbe to be useful in industrial processes or responsible for biogeochemical cycles.

Oxidative phosphorylation

Oxidative phosphorylation (UK ɒkˈsɪd.ə.tɪv, US ˈɑːk.sɪˌdeɪ.tɪv ) or electron transport-linked phosphorylation or terminal oxidation is the metabolic pathway in which cells use enzymes to oxidize nutrients, thereby releasing chemical energy in order to produce adenosine triphosphate (ATP). In eukaryotes, this takes place inside mitochondria. Almost all aerobic organisms carry out oxidative phosphorylation. This pathway is so pervasive because it releases more energy than alternative fermentation processes such as anaerobic glycolysis.

Bacteria

Bacteria (bækˈtɪəriə; : bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria play a vital role in many stages of the nutrient cycle by recycling nutrients and the fixation of nitrogen from the atmosphere.

Related lectures (57)

Microbial metabolism: Energy Generation and Biomass Production

Explores microbial metabolism, focusing on energy generation, biomass production, redox reactions, and electron carriers.

Microbial Metabolic Diversity

Explores microbial metabolic diversity, enzyme catalysis, redox carriers, and Fe(III) reduction mechanisms.

Metabolic Diversity: Fermentation and Energy Production

Explores metabolic diversity in microorganisms, emphasizing fermentation pathways and energy production.

Metabolic Diversity and Fe/Mn Cycles

Explores metabolic diversity, oxidative phosphorylation, and Fe/Mn cycles in biological systems, emphasizing electron transfer mechanisms and environmental implications.

Photosynthesis: Pigments and Energy Transfer in Microorganisms