Proton Motive Force Definition

Related to Proton-motive force. In mitochondria and chloroplasts proton gradients are used to generate a chemiosmotic potential that is also known as a proton motive force.

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The proton motive force has two possible beginnings.

Proton motive force definition. Proton-motive force synonyms Proton-motive force pronunciation Proton-motive force translation English dictionary definition of Proton-motive force. Neben Proton Motive Force hat PMF andere Bedeutungen. Here you find 3 meanings of the word proton-motive force.

National Library of Medicine 000 0 votes Rate this definition. Biochem the mechanism by which the synthesis and utilization of the biochemical energy source ATP is regulated. PMF elektrochemischer Protonengradient Bezeichnung fr die an einer biologischen Membran anliegende elektrochemische Potentialdifferenz fr Protonen.

This potential energy is used for the synthesis of ATP by oxidative phosphorylation or photophosphorylation respectively. See definitions examples. The energy generated by oxidative.

Proton-motive force can be generated by a variety of phenomena including the operation of an electron transport chain illumination of a PURPLE MEMBRANE and the hydrolysis of ATP by a proton ATPase. Some protons leak back across the mitochondrial inner membrane constantly consuming the membrane potential and stimulating activity of the respiratory chain to maintain it Jastroch Divakaruni Mookerjee Treberg Brand 2010. Protonenmotorische Kraft protonenverschiebende Kraft proton motive force Abk.

Word of the day. Fr alle Bedeutungen von PMF klicken Sie bitte auf Mehr. Proton-motive force can be generated by a variety of phenomena including the operation of an electron transport chain illumination of a.

One way the proton motive force begins is with the donation of H from NADH to flavin mononucleotide FMN. 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 motive force PMF. Rate of increase or decrease of a variable value or its representative curve.

Noun Physics Biochemistry. The other way the proton motive force begins is through complex II where FADH feeds e. Proton motive force PMF is the force that promotes movement of protons across membranes downhill the electrochemical potential.

Definition of protonmotive force in English. A force analogous to the electromotive force which acts on the proton gradient between the two sides of a cell membrane and is equal to the sum of the electric potential difference and the pH gradient through the membrane. The 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 through the ATP synthase complex leading to the formation of ATP from adenosine diphosphate ADP and phosphate.

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What does proton-motive force mean. A force analogous to the electromotive force which acts on the proton gradient between the two sides of a cell membrane and is equal to the sum of the electric potential difference and the pH gradient through the membrane. Chemiosmosis Chemiosmotic theory chemiosmosis The movement of ions across a selectively permeable membrane down an electrochemical gradient usually understood to mean the respiratory chain in mitochondria.

Energy that is generated by the transfer of protons or electrons across an energy-transducing membrane and that can be used for chemical osmotic or mechanical work. Bitte scrollen Sie nach unten und klicken Sie um jeden von ihnen zu sehen. Edge gradient in radiology the penumbra or partial shadow on a radiograph caused by the three-dimensional shape of an object.

An electrochemical gradient has two components. The potential energy stored in the form of an electrochemical gradient generated by the pumping of hydrogen ions across biological membranes during chemiosmosis. Proton motive force PMF is the force that promotes the movement of protons across membranes downhill the electrochemical potential.

The protonmotive force generated during substrate oxidation is not used exclusively to drive ATP synthesis. Energy that is generated by the transfer of protons or electrons across an energy-transducing membrane and that can be used for chemical osmotic or mechanical work.

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