Webb18 okt. 2024 · Proton motive force (PMF) is the force that promotes the movement of protons across membranes downhill the electrochemical potential. Overview A difference of solute concentration between two compartments separated by a biological membrane generates a tendency to equilibrium, which, in the case of protons, is called proton … WebbUbiquinol is oxidized to ubiquinone, and the resulting released protons reduce the proton motive force. Proton translocation mechanism. The coupling of proton translocation and electron transport in Complex I is currently proposed as being indirect (long range conformational changes) as opposed to direct (redox intermediates in the hydrogen ...
Bicarbonate Alters Bacterial Susceptibility to Antibiotics by …
WebbWhy can it be said that the proton motive force is a unifying theme in most of bacterial metabolism? Chemical pathways by which living things function, especially those that provide cellular energy, such as the transformation of energy from food into the energy of … WebbQuestion: Biochemistry. Which statement regarding the proton-motive force is false and why? a) It is a result of electron flow through the respiratory chain b) It is used by ATP synthase to synthesize ATP c) It results from an [H+] gradient across the outer mitochondrial membrane d) It is both chemical and electrical potential energy. … curls4lyfe
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WebbThe proton-motive force created by the pumping out of protons by the respiratory chain complexes is in the mitochondria of most tissues mainly used to translocate protons … Webbför 2 dagar sedan · This proton motive force can be provided for example by ATP synthase or proton-pumping rhodopsin, as already demonstrated in liposome systems. (13) For thermodynamically very favorable electron donating substrates (e.g., phosphite, formate, and hydrogen), the NADH/NAD + ratio that can be generated by the electron donor may … WebbThe proton motive force drives the outer membrane transport of cobalamin in Escherichia coli Author C Bradbeer 1 Affiliation 1 Department of Biochemistry, School of Medicine, University of Virginia Health Sciences Center, Charlottesville 22908. PMID: 8387997 PMCID: PMC204637 DOI: 10.1128/jb.175.10.3146-3150.1993 Abstract curls 70s