cyclic photophosphorylation

cyclic photophosphorylation
the coupling of ATP formation with liberation of the energy arising from a cyclic flow of electrons from the ferredoxin-reducing system back to the chlorophyll.

Medical dictionary. 2011.

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  • cyclic photophosphorylation — (fo to fos for ī la shun) The formation of ATP when light energy is used to move electrons cyclically through an electron transport chain during photosynthesis; only photosystem I participates …   Dictionary of microbiology

  • cyclic photophosphorylation — Process by which light energy absorbed by photosystem I in the chloroplast can be used to generate ATP without concomitant reduction of NADP+ or other electron acceptors. Energised electrons are passed from PS I to ferredoxin, and thence along a… …   Dictionary of molecular biology

  • Photophosphorylation — through light dependent reactions of photosynthesis at the thylakoid membrane The production of ATP using the energy of sunlight is called photophosphorylation. Only two sources of energy are available to living organisms: sunlight and reduction… …   Wikipedia

  • photophosphorylation — The synthesis of ATP that takes place during photosynthesis. In non cyclic photophosphorylation the photolysis of water produces electrons that generate a proton motive force which is used to produce ATP, the electrons finally being used to… …   Dictionary of molecular biology

  • non-cyclic photophosphorylation — Process by which light energy absorbed by photosystems I and II in chloroplasts is used to generate ATP (and also NADPH). Involves photolysis of water by photosystem II, passage of electrons along the photosynthetic electron transport chain with… …   Dictionary of molecular biology

  • Light-dependent reaction — The initial stage of the photosynthetic system is the light dependent reaction, which converts solar energy into potential energy. The light dependent reaction produces oxygen gas and converts ADP and NADP+ intothe energy carriers ATP and… …   Wikipedia

  • photosynthesis — photosynthetic /foh teuh sin thet ik/, adj. photosynthetically, adv. /foh teuh sin theuh sis/, n. Biol., Biochem. (esp. in plants) the synthesis of complex organic materials, esp. carbohydrates, from carbon dioxide, water, and inorganic salts,… …   Universalium

  • Cytochrome b6f complex — Crystal structure of the cytochrome b6f complex from C. reinhardtii (1q90). Hydrocarbon boundaries of the lipid bilayer are shown by red and blue dots …   Wikipedia

  • Thylakoid — A Thylakoid is a membrane bound compartment inside chloroplasts and cyanobacteria. They are the site of the light dependent reactions of photosynthesis. The word thylakoid is derived from the Greek thylakos , meaning sac . Thylakoids consists of… …   Wikipedia

  • Light-dependent reactions — of photosynthesis at the thylakoid membrane See also: Light independent reactions The light dependent reactions , or light reactions, are the first stage of photosynthesis, the process by which plants capture and store energy from sunlight. In… …   Wikipedia

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