Toru Hayashi, Akira Yamaguchi, Kazuhito Hashimoto, Ryuhei Nakamura. Yuki Kato, Tadao Shibamoto, Shoichi Yamamoto, Tadashi Watanabe, Naoko Ishida, Miwa Sugiura, Fabrice Rappaport, Alain Boussac. In this contribution, attention will mostly be focused on the history of research into the effects of bicarbonate on electron flow reactions on the acceptor side. FTIR spectroelectrochemistry combined with a light-induced difference technique: Application to the iron-quinone electron acceptor in photosystem II. The results show that a complex of plastoquinone and Fe can act as the stable “primary” electron acceptor in photosystem II reaction centers and that the interaction of its singly reduced form with the reduced intermediary acceptor, Pheo [unk], is responsible for the EPR doublet. This article is cited by in photosystem II treated at high pH. http://pubs.acs.org/page/copyright/permissions.html, https://doi.org/10.1021/acs.jpclett.9b00959, https://doi.org/10.1021/acs.biochem.8b00263, https://doi.org/10.1021/acs.langmuir.6b03499, https://doi.org/10.1021/acs.biochem.6b01052, https://doi.org/10.1016/j.bbabio.2019.148082, https://doi.org/10.1134/S0006297919090086, https://doi.org/10.1007/s11099-018-0778-8, https://doi.org/10.1007/978-3-319-48873-8_4, https://doi.org/10.1016/j.bbabio.2016.03.004, https://doi.org/10.1016/j.bbabio.2015.09.011, https://doi.org/10.1016/j.jphotochemrev.2014.09.004, https://doi.org/10.1007/978-4-431-55357-1_40, https://doi.org/10.1371/journal.pone.0115466, https://doi.org/10.1007/s11164-014-1828-x, https://doi.org/10.1016/j.bbabio.2013.12.011, https://doi.org/10.1007/s11120-012-9787-9, https://doi.org/10.1007/s11120-013-9831-4, https://doi.org/10.1007/s11120-013-9926-y, https://doi.org/10.1146/annurev-biochem-070511-100425, https://doi.org/10.1007/978-3-642-32034-7_10, https://doi.org/10.1016/j.bbabio.2012.06.006, https://doi.org/10.1016/j.febslet.2011.12.039, https://doi.org/10.1007/978-94-007-1579-0_17, https://doi.org/10.1016/j.bbabio.2011.07.012, https://doi.org/10.1002/9781119951438.eibc0455, https://doi.org/10.1016/j.jphotobiol.2011.02.010, https://doi.org/10.1007/978-94-007-0388-9_13, https://doi.org/10.1016/j.febslet.2010.03.002. in reaction centers of Rb. Electron spin echo envelope modulation (ESEEM) spectroscopy as a tool to investigate the coordination environment of metal centers. PY - 1998/8/18. Photocurrents from photosystem II in a metal oxide hybrid system: Electron transfer pathways. Information. 2 Redox potential of pheophytin So far only plastoquinone-45 (PQ-45) has been identified as an obligatory functional component of the photosynthetic electron transport chain in chloroplasts between photosystem II and photosystem I. Modified molecular interactions of the pheophytin and plastoquinone electron acceptors in photosystem II of chlorophyll D-containing Acaryochloris marina as revealed by FTIR spectroscopy. > Which are the mobile electron carriers in the chloroplast ETC ? Plastoquinone (PQ)-9 is an electron carrier that plays an essential role in photosynthesis where it is involved in linear and alternative electron flows. Plant. 5 Electron carriers. Resolving the EPR Spectra in the Cytochrome bc 1 Complex from Saccharomyces cerevisiae. activity of Photosystem II (water plastoquinone oxido-reductase). Find more information about Crossref citation counts. Secondary electron transfer reactions of the isolated Photosystem II reaction centre after reconstitution with plastoquinone-9 and diacylglycerolipids. References. Tanai Cardona, Arezki Sedoud, Nicholas Cox, A. William Rutherford. Spectroelectrochemical Determination of the Redox Potentials of Pheophytin a and Primary Quinone QA in Photosystem II from Thermosynechococcus Elongatus. David R. Weinberg, Christopher J. Gagliardi, Jonathan F. Hull, Christine Fecenko Murphy, Caleb A. Kent, Brittany C. Westlake, Amit Paul, Daniel H. Ess, Dewey Granville McCafferty, and Thomas J. Meyer . The results show that a complex of plastoquinone and Fe can act as the stable “primary” electron acceptor in photosystem II reaction centers and that the interaction of its singly reduced form with the reduced intermediary acceptor, Pheo [unk] , is responsible for the EPR doublet. Tadao Shibamoto, Yuki Kato, Ryo Nagao, Takuya Yamazaki, Tatsuya Tomo, Tadashi Watanabe. Files available from the ACS website may be downloaded for personal use only. Users are & Account Managers, For The value of 6 is 8.9 X reduced and does not contribute to the absorption 1 O4 when dark-adapted chloroplasts (untreated with change in the UV range. Yiannis Deligiannakis, Maria Louloudi, Nick Hadjiliadis. From measurements of nanosecond recombination luminescence Katharina Brinkert, Sven De Causmaecker, Anja Krieger-Liszkay, Andrea Fantuzzi, A. William Rutherford. It is a primary electron acceptor and contains chlorophyll with the Magnesium replaced by two protons5. Proc Nat Acad Sci, USA 77: 7227–7231 Google Scholar Die Kombination einer auf Photosystem 1 basierenden Photokathode und einer auf Photosystem 2 basierenden Photoanode zu einem Z-Schema-Analogon für biophotovoltaische Anwendungen. Your Mendeley pairing has expired. Plastoquinone (PQ) and ubiquinone (UQ) are two important prenylquinones functioning as electron transporters in plants. Flash-induced electrochromic absorbance change at 5 18 nm Absorbance changes in the 520nm region have been interpreted as indicating an The Journal of Chemical Physics 1998 , 108 (24) , 10143-10151. Bicarbonate-induced redox tuning in Photosystem II for regulation and protection. , Redox potential of the primary plastoquinone electron acceptor Q(A) in photosystem II from Thermosynechococcus elongatus determined by spectroelectrochemistry. The results show that a complex of plastoquinone and Fe can act as the stable "primary" electron acceptor in photosystem II reaction centers and that the interaction of its singly reduced form with the reduced intermediary acceptor, Pheo([unk]), is responsible for the EPR doublet. 33 publications. Yuki Kato, Tadao Shibamoto, Akinori Oda, Miwa Sugiura, Tadashi Watanabe. Maryam Seif Eddine, Frédéric Biaso, Rodrigo Arias‐Cartin, Eric Pilet, Julia Rendon, Sevdalina Lyubenova, Farida Seduk, Bruno Guigliarelli, Axel Magalon, Stéphane Grimaldi. The excited electron must then be replaced. Evidence for the Involvement of Loosely Bound Plastosemiquinones in Superoxide Anion Radical Production in Photosystem II. A comparative electron spin echo envelope modulation study of the primary electron acceptor quinone in Zn-substituted and cyanide-treated preparations of photosystem II. Structure and spectroscopy of reaction centers of purple bacteria. Photoreduction of the intermediary electron acceptor, pheophytin (Pheo), in photosystem II reaction centers of spinach chloroplasts or subchloroplast particles (TSF-II and TSF-IIa) at 220 K and redox potential E h = -450 mV produces an EPR doublet centered at g = 2.00 with a splitting of 52 G at 7 K in addition to a narrow signal attributed to Pheo[unk] ( g = 2.0033, Δ H ≈ 13 G). A study by Fourier transform infrared spectroelectrochemistry. Volker Hartmann, Tim Kothe, Sascha Pöller, Eithar El-Mohsnawy, Marc M. Nowaczyk, Nicolas Plumeré, Wolfgang Schuhmann, Matthias Rögner. We used particles of Scenedesmus mutant No. reaction center. Plastoquinone can be one or two electron acceptor or donor from Photosystem II to the cytochrome bf complex in mobile intra-thylakoid membrane5. Pheo transfers electrons to the primary electron acceptor ([Q.sub.A]) which, in turn, gives them to [Q.sub.B], which can accept two electrons, leading to the formation of plastoquinol … Alternative Electron Acceptors for Photosystem II. These are plastoquinone (PQ) plastocyanin (PC), ferredoxin (FD) ELECTRON TRANSPORT This process occurs in several steps. Plastoquinone is the primary electron acceptor for electrons leaving photosystem II. These results suggest that the site of inhibition by BAS 13-338 is between Q (next to the primary electron acceptor) and plastoquinone. EPR and ESEEM study of the plastoquinone anion radical QA−. Yiannis Deligiannakis, Caroline Jegerschöld, A. William Rutherford. Spectroscopic Analysis of the Redox Reactions of π-Conjugated Cofactors in Photosynthetic Reaction Center. Redox potentials of primary electron acceptor quinone molecule (QA)- and conserved energetics of photosystem II in cyanobacteria with chlorophyll a and chlorophyll d. Mechanism of Photosynthetic Production and Respiratory Reduction of Molecular Dioxygen: A Biophysical and Biochemical Comparison. Comparative Analysis of the Interaction of the Primary Quinone QA in Intact and Mn-Depleted Photosystem II Membranes Using Light-Induced ATR-FTIR Spectroscopy. For plant PS II, PheoD1- was generated under conditions in which the primary plastoquinone was present as an anion (QA-) and as a modified species taken to be the neutral doubly reduced hydroquinone (QAH2). C) Cytochrome b functions as part of the electron transport chain. Get article recommendations from ACS based on references in your Mendeley library. true. OSTI.GOV Journal Article: Optical and kinetic properties of semireduced plastoquinone and ubiquinone: electron acceptors in photosynthesis The redox potential of the primary plastoquinone electron acceptor Q A, E m (Q A /Q A −), in an oxygen-evolving photosystem (PS) II complex from a thermophilic cyanobacterium Thermosynechococcus elongatus was determined to be −140 ± 2 mV vs. SHE by thin-layer cell spectroelectrochemistry for the first time. the Altmetric Attention Score and how the score is calculated. k~*.~ely bound plastoquinone, two-electron aeceplor of Pholosystcm I! Each photosystem contains about 300 primary absorbing complexes (also called antenna chlorophyll complexes) with one reaction center molecule in which the energy conservation takes place. not otherwise permitted to reproduce, republish, redistribute, or sell any Supporting Information A.P. Photocurrent Generation of Reconstituted Photosystem II on a Self-Assembled Gold Film. The primary photochemical quencher Q and the secondary electron acceptor pool in Photosystem II have been titrated. 56 publications. the Altmetric Attention Score and how the score is calculated. Primary plastoquinone electron acceptor in PSII. Please reconnect, Authors & primary plastoquinone acceptor (Q i l Fe2+) to mild trypsinization in PS II particles G. Renger, A.W Rutherford* and M VGlker *Serwe de Bzophysrque, Department de Blologre, Centre d’Etudes NuclPalres de Saclay, 91191 Glf-sur- Yvette Cidex, Proceedings of the National Academy of Sciences. Tim Kothe, Nicolas Plumeré, Adrian Badura, Marc M. Nowaczyk, Dmitrii A. Guschin, Matthias Rögner, Wolfgang Schuhmann. with the primary electron acceptor has led to a new hypothesis describing the reactions at the reducing end of Photosystem-I1 reaction centre. The PsbQ' protein affects the redox potential of the QA in photosystem II. AU - Vermaas, Willem. As the essential link between both chlorophylls a pool of plastoquinone (PQ) (≈5 molecules) has been identified 20, 32, 33. An ONIOM Study of the Spin Density Distribution of the QA Site Plastosemiquinone in the Photosystem II Reaction Center. This material is available free of charge via the Internet at http://pubs.acs.org. It is the primary electron acceptor in PSI. Stability of organic compounds on the oxygen-evolving center of photosystem II and manganese oxide water oxidation catalysts. A) Phaeophytin is the primary electron acceptor of PS II. The Stable Primary Electron Acceptor Q A and the Secondary Electron Acceptor Q B. Subject Matter of Electron Transport Chain: The primary function in photosynthesis is the raising of an electron to a higher energy level in chlorophyll. B Kunio Ido, Christine M. Gross, Fernando Guerrero, Arezki Sedoud, Thanh-Lan Lai, Kentaro Ifuku, A. William Rutherford, Anja Krieger-Liszkay. Protein film photoelectrochemistry of the water oxidation enzyme photosystem II. Natural Variants of Photosystem II Subunit D1 Tune Photochemical Fitness to Solar Intensity *. T1 - Mobility of the primary electron-accepting plastoquinone Q(A) of photosystem II in a Synechocystis sp. The reaction entre molecule of PS II system is designated as P680 and that of PS I as P700. Orientation-Selective ESEEM Study and Crystal Structure of a CuII(thiochrome)Cl2 Complex. The redox potential of the primary plastoquinone electron acceptor QA, Em(QA/QA−), in an oxygen-evolving photosystem (PS) II complex from a thermophilic cyanobacterium Thermosynechococcus elongatus was determined to be −140 ± 2 mV vs. SHE by thin-layer cell spectroelectrochemistry for the first time. Back-reactions, short-circuits, leaks and other energy wasteful reactions in biological electron transfer: Redox tuning to survive life in O system. These metrics are regularly updated to reflect usage leading up to the last few days. 1D- and 2D-ESEEM Study of the Semiquinone Radical QA- of Photosystem II. primary electron acceptor of Photosystem II (PS II) taking electrons from the excited primary electron donor, chlorophyll P680, is a special form of bound plastoquinone (referred to as Q; also known as QA) with redox potential of −130 mV; its one-electron re-duction is accompanied by characteristic absorbance Journal of Photochemistry and Photobiology C: Photochemistry Reviews. C Photosynthesis: From Natural to Artificial Information about how to use the RightsLink permission system can be found at Plastoquinone-9 (PQ-9) is an essential component of photosynthesis that carries electrons in the linear and alternative electron transport chains, and is also a redox sensor that regulates state transitions and gene expression. without permission from the American Chemical Society. sphaeroides. Stephan G. Zech, Jens Kurreck, Gernot Renger, Wolfgang Lubitz, Robert Bittl. In Photosystem I, what provides the energy necessary to transfer an electron from the P700 reaction center to the primary acceptor of PS 1? The primary photochemical quencher Q and the secondary electron acceptor pool in Photosystem II have been titrated. , in Photosystem II. Introduction. Influence of the PsbA1/PsbA3, Ca2+/Sr2+ and Cl−/Br− exchanges on the redox potential of the primary quinone QA in Photosystem II from Thermosynechococcus elongatus as revealed by spectroelectrochemistry. Fraser MacMillan, Christian Lange, Matt Bawn, Carola Hunte. The photon causes an electron in the chlorophyll to become “excited.” The energy given to the electron then travels from one pigment molecule to another until it reaches a pair of chlorophyll a molecules called the reaction center. Comparison of photoelectrochemical water oxidation activity of a synthetic photocatalyst system with photosystem II. Plastoquinone is the primary electron acceptor for electrons leaving photosystem II. PQ-9 is a multilocation compound that is partitioned in the chloroplast between thylakoids, plastoglobules, and envelopes. Yuki Kato, Rina Ishii, and Takumi Noguchi . A. William Rutherford, Artur Osyczka, Fabrice Rappaport. The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Wangyin Wang, Zhen Li, Jun Chen, and Can Li . Plastoquinone is reduced (accepts two protons (H+) from the stromal matrix of the chloroplast, coupled to two electrons (e-) from photosystem II), forming plastoquinol. This article is cited by 8) or a monomer (9) of chlorophyll (Chl), and the primary ac-ceptor, Q, a special form of plastoquinone (PQ) (8-14). Journal of Photochemistry and Photobiology B: Biology. Acad. ADVERTISEMENTS: In this article we will discuss about the subject-matter and components of electron transport chain. W Klimov, E Dolan, ER Shaw and B Ke (1980) Interaction between the intermediary electron acceptor (pheophytin) and a possible plastoquinone-iron complex in photosystem-ll reaction centers. The E(m)(Q(A)/Q(A)(-)) value obtained here together with the … B 6-Azido-5-decyl-2,3-dimethoxy-p-benzoquinone (6-azido-Q 0 C 10) was found to replace the native plastoquinone at B (the second stable electron acceptor to Photosystem II (PS II)).The 6-azido-Q 10 C 10 would accept electrons from the primary electron-accepting quinone, Q, thus allowing electron transport through PS II to the plastoquinone pool in thylakoids. For permission to reproduce, republish and Correspondence: Govindjee. & Account Managers, For Photosynthetic Water Splitting: Apparatus and Mechanism. PCC 6803 strain carrying mutations in the D2 protein. 2. ESEEM Study of the Phyllosemiquinone Radical A1•- in 14N- and 15N-Labeled Photosystem I. Yiannis Deligiannakis,, Alain Boussac,, Hervé Bottin,, Véronique Perrier,, Octavian Bârzu, and. primary electron acceptor of Photosystem II (PS II) taking electrons from the excited primary electron donor, chlorophyll P680, is a special form of bound plastoquinone (referred to as Q; also known as QA) with redox potential of −130 mV; its one-electron re-duction is accompanied by characteristic absorbance Determining the Secondary Structure of Membrane Proteins and Peptides Via Electron Spin Echo Envelope Modulation (ESEEM) Spectroscopy. The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Yun Zhang, Nikki Magdaong, Harry A. Frank, James F. Rusling. Electron spin-lattice relaxation of silver nanoparticles embedded in SiO2 and TiO2 matrices. Biochemistry 48, 10682 – … Identification of the reduced primary electron acceptor … During light-driven charge separation a plastoquinone molecule in the Q A site, which is usually capable of accepting only a single electron, accepts an electron from Pheo D1. Physiol. You have to login with your ACS ID befor you can login with your Mendeley account. Find more information on the Altmetric Attention Score and how the score is calculated. It transports the protons to the lumen of thylakoid discs, while the electrons continue through the electron transport chain into the cytochrome b 6 f protein complex. Y1 - 1998/8/18 in photosystem II reveals the mechanism of electron transfer regulation. Using several experiments, including electron paramagnetic resonance (EPR), they were able to show that pheophytin was reducible and, therefore, the primary electron acceptor between P680and plastoquinone (Klimov, Allakhverdiev, Klevanik, Shuvalov). Redox potential of the terminal quinone electron acceptor Q ox⋅Z Energetics of the exchangeable quinone, Q B) Plastoquinone is one of the intermediate electron acceptors associated with Photosystem II. David J. Vinyard, Gennady M. Ananyev, G. Charles Dismukes. General Analysis of 14N (I = 1) Electron Spin Echo Envelope Modulation. Variants of photosystem II D1 protein in Thermosynechococcus elongatus. Please note: If you switch to a different device, you may be asked to login again with only your ACS ID. Redirecting Electron Transfer in Photosystem II from Water to Redox-Active Metal Complexes. B) Plastoquinone is one of the intermediate electron acceptors associated with Photosystem II. Find more information on the Altmetric Attention Score and how the score is calculated. A photon of light energy travels until it reaches a pigment molecule, such as chlorophyll. A) Phaeophytin is the primary electron acceptor of PS II. Your Mendeley pairing has expired. M. Yamada, R. Nagao, M. Iwai, Y. Arai, A. Makita, H. Ohta, T. Tomo. Vasily V. Terentyev, Anna K. Shukshina, Aleksandr A. Ashikhmin, Konstantin G. Tikhonov, Alexandr V. Shitov. Photoelectrochemical Water Oxidation with Photosystem II Integrated in a Mesoporous Indium–Tin Oxide Electrode. The Calvin Cycle uses _____ and _____, produced in the light reactions of photosynthesis, to drive the fixation of carbon dioxide. Los, T. Tomo, V. V. Klimov, M. Mimuro. These results suggest that the site of inhibition by BAS 13-338 is between Q (next to the primary electron acceptor) and plastoquinone. https://doi.org/10.1016/bs.mie.2015.06.037, https://doi.org/10.1007/978-3-642-32034-7_8, https://doi.org/10.1007/978-94-007-4887-3_6, https://doi.org/10.1016/j.jmr.2011.01.001, https://doi.org/10.1007/s00723-009-0077-4, https://doi.org/10.1007/978-1-4757-5166-6_13, https://doi.org/10.1016/S0010-8545(99)00218-0, https://doi.org/10.1016/S0162-0134(99)00173-7, https://doi.org/10.1016/S0014-5793(98)01628-7, https://doi.org/10.1016/S0076-6879(98)97025-2, https://doi.org/10.1016/S0370-1573(97)00004-5, https://doi.org/10.1016/S0009-2614(97)00390-4, https://doi.org/10.1016/S0009-2614(96)01255-9. Golbeck JH, Kok B. It plays a role on the electron donor side as well as the electron acceptor side. Using several experiments, including electron paramagnetic resonance (EPR), they were led to believe that pheophytin was reducible and therefore potentially the primary electron acceptor between P680 and plastoquinone. -610 mV (4), acts as an intermediary electron acceptor between the primary donor, P680, probably either a dimer (see ref. L. A. Vitukhnovskaya, E. V. Fedorenko, M. D. Mamedov. In the 1977s, scientists Klevanik, Klimov, Shuvalov performed a series of experiments to demonstrate that it is pheophytin and not plastoquinone that serves as the primary electron acceptor in photosystem II. One of these molecules - a special plastoquinone X-320 - is the primary acceptor of Chl-a II 32, 33, 34a, 34b which is converted into a semiquinone anion. Find more information about Crossref citation counts. Electron Paramagnetic Resonance Studies of Zinc-Substituted Reaction Centers from Rhodopseudomonasviridis. Binding Site Influence on the Electronic Structure and Electron Paramagnetic Resonance Properties of the Phyllosemiquinone Free Radical of Photosystem I. Get article recommendations from ACS based on references in your Mendeley library. H and C) Cytochrome b functions as part of the electron … The inhibition was not reversed by diphenyl carbazide used as an artificial electron donor to photosystem II. Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. Plastoquinone. plast. pH-Dependent Regulation of the Relaxation Rate of the Radical Anion of the Secondary Quinone Electron Acceptor QB in Photosystem II As Revealed by Fourier Transform Infrared Spectroscopy. 8) or a monomer (9) of chlorophyll (Chl), and the primary ac-ceptor, Q, a special form of plastoquinone (PQ) (8-14). Does the water-oxidizing Mn4CaO5 cluster regulate the redox potential of the primary quinone electron acceptor QA in photosystem II? Answer. Photophysics of photosynthesis. We used particles of Scenedesmus mutant No. A comparative electron spin echo envelope modulation study of the primary electron acceptor quinone in Zn-substituted and cyanide-treated preparations of photosystem II. Biochimica et Biophysica Acta (BBA) - Bioenergetics. Estimation of the driving force for dioxygen formation in photosynthesis. oxidation is triggered by charge separation between the primary electron donor, P680, and the primary electron acceptor, pheo-phytin (Phe) a. Andrei V. Astashkin, Hideyuki Hara, Shigeki Kuroiwa, Asako Kawamori, Kozo Akabori. 2 D. J. Chapman, I. Vass, J. Barber. −⋅A Yiannis Deligiannakis, A.William Rutherford. S. I. Allakhverdiev, T. Tsuchiya, K. Watabe, A. Kojima, D. A. Reviewers, Librarians primary electron acceptor by the difference 6 = AI/Z amine, this donor is either inactivated or rapidly (321 nm) - AI/Z (282 nm). The light excites an electron from the chlorophyll a pair, which passes to the primary electron acceptor. Probing the Menasemiquinone Binding Mode to Nitrate Reductase A by Selective Sci. However, the functions of PQ go far beyond photosynthesis. The redox potential of the primary plastoquinone electron acceptor Q(A), E(m)(Q(A)/Q(A)(-)), in an oxygen-evolving photosystem (PS) II complex from a thermophilic cyanobacterium Thermosynechococcus elongatus was determined to be -140 +/- 2 mV vs. SHE by thin-layer cell spectroelectrochemistry for the first time. Mariko Miyachi, Shu Ikehira, Daiki Nishiori, Yoshinori Yamanoi, Masato Yamada, Masako Iwai, Tatsuya Tomo, Suleyman I. Allakhverdiev, and Hiroshi Nishihara . The American Chemical Society holds a copyright ownership interest in any copyrightable Supporting The Em(QA/QA−) value obtained here together with the recently determined redox potential of pheophytin (Phe) a [Kato et al. , Redox potential of the primary plastoquinone electron acceptor Q(A) in photosystem II from Thermosynechococcus elongatus determined by … Ferredoxin (FD) (E’ = – 430 mV): Masaru Kato, Tanai Cardona, A. William Rutherford, and Erwin Reisner . Kanchana R. Ravichandran, Allan B. Zong, Alexander T. Taguchi, Daniel G. Nocera, JoAnne Stubbe, and Cecilia Tommos . The two photoexcited electrons passes from the primary electron acceptor of PSII to PSI via an electron transport chain…the electron transport chain is made up of the electron carrier plastoquinone (Pq), a cytochrome complex and a protein called plastocyanin (Pc) 5. You’ve supercharged your research process with ACS and Mendeley! Ateeq Ur Rehman, Sandeesha Kodru, Imre Vass. in photosystem II by pulsed EPR spectroscopy on light-induced radical pairs. Species-dependence of the redox potential of the primary quinone electron acceptor Q From measurements of nanosecond recombination luminescence Electronic Structure Studies of the Spin Density Distribution of the QA Plastosemiquinone Free Radical of Photosystem II. 8 that lack System I and allowed the system to equilibrate with external redox mediators in darkness prior to … In the 1977s, scientists Klevanik, Klimov, Shuvalov performed a series of experiments to demonstrate that it is pheophytin and not plastoquinone that serves as the primary electron acceptor in photosystem II. Photo‐reducible plastoquinone pools in chloroplasts of Evidence that Ala M260 is hydrogen-bonded to the reduced primary acceptor quinone QA−. Supplementary figures, detailed experimental procedures. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Reviewers, Librarians The Journal of Physical Chemistry Letters. Plastoquinone is the primary electron acceptor for electrons leaving photosystem II. Lishan Liu, Daniel J. Mayo, Indra D. Sahu, Andy Zhou, Rongfu Zhang, Robert M. McCarrick, Gary A. Lorigan. Electronic Supporting Information files are available without a subscription to ACS Web Editions. Phosphatidylglycerol Requirement for the Function of Electron Acceptor Plastoquinone Q B in the Photosystem II Reaction Center † Biochemistry, 2002 Gombos Zoltan Spin−Lattice Relaxation of the Pheophytin, Pheo-, Radical of Photosystem II. The Main Structural and Functional Characteristics of Photosystem-II-Enriched Membranes Isolated from Wild Type and cia3 Mutant Chlamydomonas reinhardtii. Deepak Kumar Yadav, Ankush Prasad, Jerzy Kruk, Pavel Pospíšil, . Photosys- tern il; QA, bound plastoquinone, one-electron acceptor of Photosys- tern 11; Q~. Spoyalov, R.J. Hulsebosch, S. Shochat, P. Gast, A.J. Photosystem II: The Reaction Center of Oxygenic Photosynthesis. A semiquinone intermediate generated at the Qo site of the cytochrome bc1 complex: Importance for the Q-cycle and superoxide production. Cell with a 1 V Open‐Circuit Voltage Combining Photosystem II and PbS Quantum Dots. Hoff. Natl. A J. L. Cape, M. K. Bowman, D. M. Kramer. ; RC. In (a) photosystem II, the electron comes from the splitting of water, which releases oxygen as a waste product. Formal Reduction Potentials of Difluorotyrosine and Trifluorotyrosine Protein Residues: Defining the Thermodynamics of Multistep Radical Transfer. Note: You’ve supercharged your research process with ACS and Mendeley! 2015; 125(1-2):105-14 (ISSN: 1573-5079) 2 Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. A. Frank, James Durrant, A. William Rutherford Makita, H. Ohta, T.,! R. Ravichandran, Allan B. Zong, Alexander T. Taguchi, Daniel J. Mayo, Indra D.,. Nitschke, A. Makita, H. Ohta, T. Tsuchiya, K. Watabe, A. William Rutherford, Fantuzzi. Can Li ) are two important prenylquinones functioning as electron transporters in plants of,... Bba ) - Bioenergetics output: Contribution to journal › article, Xiao-Song Tang, Hervé! Mobile intra-thylakoid membrane5 y1 - 1998/8/18 mobile electron carriers transport the excited between. The Qo site of the QA binding Pocket of PS II and cyanide-treated preparations of Photosystem:. The Phyllosemiquinone free Radical of Photosystem II article has received online Konstantin G. Tikhonov Alexandr! And cia3 Mutant Chlamydomonas reinhardtii chloroplasts of Tradescentia plants acclimated to high and low potential of! Tuning in Photosystem II and K. V. Lakshmi preparations of Photosystem II: Study by Hyperfine Sublevel Correlation Spectroscopy Type! Was met with fierce objection since many believed pheophytin to be a byproduct of chlorophyll D-containing Acaryochloris marina Revealed... Physics 1998, 108 ( 24 ), 10143-10151 and electron Spin Envelope. A ) Phaeophytin is the primary quinone QA in Intact and Mn-Depleted Photosystem II core complexes before after. A and the plastoquinone anion Radical Production in Photosystem II, which releases oxygen as waste. Side as well as the electron comes from the Reaction Center dioxygen formation in photosynthesis between ox⋅Z. Regulate the redox Potentials of the primary electron acceptor for electrons leaving Photosystem II from water to Redox-Active complexes... 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