Lecture

Electron Transport Chain: Proton Pumps and Coenzyme Q

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In course

CH-313: Chemical biology

Chemical Biology is an interdisciplinary field using chemical principles and techniques to analyse and manipulate biological systems. It relies on small-molecule chemicals to gain an in-depth understanding of biology, and provides new tools and products ra ...

Description

This lecture covers the electron transport chain (ETC) in mitochondria, focusing on the proton pumps involved in complexes I, III, and IV. It also discusses the role of Coenzyme Q in electron transport and its chemical biology functions.

Instructors (2)

Rudolf Hovius

Expertise Â•Protein structure, expression & purificationÂ•Molecular interaction & receptor activationÂ•Fluorescence imaging & spectroscopySignalling & sensing Mission => Teaching: Lecture courses, tutorials and practicals in biochemistry, biophysical chemistry of membranes and signalling processes. Participating to the Commission d'Enseignement and Commission de l'Ecole Doctorale of Chemistry and Chemical Engineering.=> Research interests: Protein function and structure, Membrane protein (especially recepto

Yimon Aye

Official source

Ontological neighbourhood

Biology

Cell biology: Cell metabolism

Related concepts (32)

Cellular respiration

Cellular respiration is the process by which biological fuels are oxidised in the presence of an inorganic electron acceptor, such as oxygen, to drive the bulk production of adenosine triphosphate (ATP), which contains energy. Cellular respiration may be described as a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from nutrients into ATP, and then release waste products.

Bioenergetics

Bioenergetics is a field in biochemistry and cell biology that concerns energy flow through living systems. This is an active area of biological research that includes the study of the transformation of energy in living organisms and the study of thousands of different cellular processes such as cellular respiration and the many other metabolic and enzymatic processes that lead to production and utilization of energy in forms such as adenosine triphosphate (ATP) molecules.

ATP synthase

ATP synthase is a protein that catalyzes the formation of the energy storage molecule adenosine triphosphate (ATP) using adenosine diphosphate (ADP) and inorganic phosphate (Pi). ATP synthase is a molecular machine. The overall reaction catalyzed by ATP synthase is: ADP + Pi + 2H+out ATP + H2O + 2H+in ATP synthase lies across a cellular membrane and forms an aperture that protons can cross from areas of high concentration to areas of low concentration, imparting energy for the synthesis of ATP.

Coenzyme Q – cytochrome c reductase

The coenzyme Q : cytochrome c – oxidoreductase, sometimes called the cytochrome bc1 complex, and at other times complex III, is the third complex in the electron transport chain (), playing a critical role in biochemical generation of ATP (oxidative phosphorylation). Complex III is a multisubunit transmembrane protein encoded by both the mitochondrial (cytochrome b) and the nuclear genomes (all other subunits). Complex III is present in the mitochondria of all animals and all aerobic eukaryotes and the inner membranes of most eubacteria.

Adenosine triphosphate

Adenosine triphosphate (ATP) is an organic compound that provides energy to drive and support many processes in living cells, such as muscle contraction, nerve impulse propagation, condensate dissolution, and chemical synthesis. Found in all known forms of life, ATP is often referred to as the "molecular unit of currency" of intracellular energy transfer. When consumed in metabolic processes, it converts either to adenosine diphosphate (ADP) or to adenosine monophosphate (AMP). Other processes regenerate ATP.

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