P680, or photosystem II primary donor, is the reaction-center chlorophyll a molecular dimer associated with photosystem II in plants, algae, and cyanobacteria...

plastoquinone: H 2O → P680 → P680* → plastoquinol Plastoquinol, in turn, transfers electrons to cyt b6f, which feeds them into PSI. The step H 2O → P680 is performed...

antenna complex, ending in the reaction center where specific chlorophylls P680 and P700 are located. Chlorophyll a is essential for most photosynthetic...

pigment P680 at the core of photosystem II, which is transferred to the primary electron acceptor, pheophytin, leaving behind P680+. The energy of P680+ is...

is mostly localized on one chlorophyll center (70−80%). Because of this, P680+ is highly oxidizing and can take part in the splitting of water. Photosystem...

pheophytin, which then passes the electrons to a quinone (QA) in RC P870 and RC P680. The overall mechanisms, roles, and purposes of the pheophytin molecules...

chlorophyll (P680+) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680+ ultimately comes...

II is P680, a special chlorophyll to which incoming excitation energy from the antenna complex is funneled. One of the electrons of excited P680* will...

molecule. The energy of the exciton is transferred to a chlorophyll molecule (P680, where P stands for pigment and 680 for its absorption maximum at 680 nm)...

hydrogen electrode (SHE). At pH = 7, Ered = 1.23 – 0.059 V × 7 = +0.82 V P680+ +  e− → P680 ~ +1.0 Half-reaction independent of pH as no  H+ is involved in the...

that are part of larger supercomplexes known as P700 in Photosystem I and P680 in Photosystem II. The structures of these supercomplexes are large, involving...

Absorption of photons of 680nm wavelength is used to excite two electrons in P680 to a higher energy level. These higher energy electrons are transferred to...

redox-active tyrosine residue that is oxidized by the energy of P680+. This resets the ability of P680 to absorb another photon and release another photo-dissociated...

& Christof Hartmann (2001) Elections in Asia: A data handbook, Volume I, p680 ISBN 0-19-924958-X "ELECTIONS HELD IN 1993". Inter-Parliamentary Union. Retrieved...

reaction center that maximally absorbs 700 nm light. Photosystem II contains P680 chlorophyll that absorbs 680 nm light best (note that these wavelengths correspond...

water molecules transfer to the electron-deficient high-energy state P680+ of the P680 pigment of Photosystem II, which have been removed into an electron...

algae and some bacteria use two photosystems, PSI with P700 and PSII with P680. Using light energy, PSII acts first to channel an electron through a series...

recovers its lost electron by oxidizing plastocyanin, which regenerates P700. P680 Photosystem I Photosystem II Chitnis, Parag R (June 2001). "P HOTOSYSTEM...

PCDI–RDA dissidents. Dolf Sternberger, Bernhard Vogel, Dieter Nohlen & Klaus Landfried (1978) Die Wahl der Parlamente: Band II: Afrika, Erster Halbband, p680...

the triplet state of the primary donor (P680) more probably than same reactions in active PSII. Triplet P680 may react with oxygen to produce harmful...

Skunavirus p272 Skunavirus P4565 Skunavirus P475 Skunavirus P656 Skunavirus P680 Skunavirus R31 Skunavirus S0139 Skunavirus sk1 Skunavirus Sl4 Skunavirus...

the soil and the plant's roots, thereby limiting electron flow from H2O to P680 in Photosystem II's reaction center. Over generations, many plants have mutated...

l'agave, Flammarion, 1998 Le Voyage de Théo, Seuil, 1998 (Points Seuil n°P680) Martin et Hannah, Calmann-Lévy, 1999 (reissue: Le Livre de poche n°14798)...

membranes of chloroplasts in plants and algae. Photosystem II (PSII) has a P680 reaction centre containing chlorophyll 'a' that uses light energy to carry...

oxidising side of PSII, a redox-active residue in the D1 protein reduces P680, the oxidised tyrosine then withdrawing electrons from a manganese cluster...

p. 892. "Kennard Family Airways". Flight. No. 18 May 1961. pp. 680–81. (p680, p681) "Air Ferry Ltd". Flight. No. 2 August 1962. p. 158. "Air Commerce...

The Argus, 28 May 1859. https://www.upperbeaconsfieldhistory.org.au/g)/p680.htm [dead link] Lauriston Girls School. "Lauriston girls School". Lauriston...