• The rate of electrons being passed from P700* to the subsequent electron acceptors is high, preventing the electron from being transferred back to P700+. (wikipedia.org)
  • The PsaA/B heterodimer binds the P700 chlorophyll special pair and subsequent electron acceptors. (cansar.ai)
  • When photosystem I absorbs light, an electron is excited to a higher energy level in the P700 chlorophyll. (wikipedia.org)
  • The resulting P700 with an excited electron is designated as P700*, which is a strong reducing agent due to its very negative redox potential of -1.2 V. Following the excitation of P700, one of its electrons is passed on to an electron acceptor, Ao, triggering charge separation producing an anionic Ao− and cationic P700+. (wikipedia.org)
  • Consequently, in most cases, the electrons transferring within photosystem I follow a linear pathway, from the excitation of the P700 special pair to the production of NADPH. (wikipedia.org)
  • P700+ recovers its lost electron by oxidizing plastocyanin, which regenerates P700. (wikipedia.org)
  • P700: the primary electron donor of photosystem I". Biochimica et Biophysica Acta (BBA) - Bioenergetics. (wikipedia.org)
  • PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. (cansar.ai)
  • PSI is a plastocyanin/cytochrome c6-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. (cansar.ai)
  • Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin or cytochrome c6. (cansar.ai)
  • This species is vital due to its ability to absorb light energy with a wavelength approximately between 430 nm-700 nm, and transfer high-energy electrons to a series of acceptors that are situated near it. (wikipedia.org)
  • The corresponding gene, AtWRINKLED1 ( AtWRI1, At3g54320), encodes a protein with two APETALA2-ethylene responsive element-binding protein (AP2/EREBP) motifs that is a signature for plant-specific transcription factors involved in a wide range of developmental processes [ 5 , 6 ]. (biomedcentral.com)
  • PSI consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. (cansar.ai)
  • Oxidoreductases with specificity for oxidation or reduction of SULFUR COMPOUNDS. (harvard.edu)
  • Photosystem I operates with the functions of producing NADPH, the reduced form of NADP+, at the end of the photosynthetic reaction through electron transfer, and of providing energy to a proton pump and eventually ATP, for instance in cyclic electron transport. (wikipedia.org)
  • Subsequently, electron transfer continues from Ao to a phylloquinone molecule known as A1, and then to three iron-sulfur clusters. (wikipedia.org)
  • however, electron transfer seems to proceed preferentially down the path including the phylloquinone bound by PsaA. (cansar.ai)
  • Complex care of individuals with multiple sulfatase deficiency: Clinical cases and consensus statement. (harvard.edu)
  • This species is vital due to its ability to absorb light energy with a wavelength approximately between 430 nm-700 nm, and transfer high-energy electrons to a series of acceptors that are situated near it. (wikipedia.org)
  • Light energy (indicated by wavy arrows) absorbed by photosystem II causes the formation of high-energy electrons, which are transferred along a series of acceptor molecules in an electron transport chain to photosystem I. Photosystem II obtains … Production of ATP 21. (e-wit.pl)
  • solar energy is absorbed and high-energy electrons are generated. (e-wit.pl)
  • Photosynthesis - Photosynthesis - The process of photosynthesis: carbon fixation and reduction: The assimilation of carbon into organic compounds is the result of a complex series of enzymatically regulated chemical reactions-the dark reactions. (e-wit.pl)
  • Complete the illustration of the overview of photosynthesis by writing the products and the reactants of the process, as well as the energy source that excites the electrons. (e-wit.pl)
  • Details about the flow of electrons through Photosystem II, b6-f complex, Photosystem I and NADP reductase have not been included here but can be found under The Process of Photosynthesis in Plants. (e-wit.pl)
  • Photosystem I operates with the functions of producing NADPH, the reduced form of NADP+, at the end of the photosynthetic reaction through electron transfer, and of providing energy to a proton pump and eventually ATP, for instance in cyclic electron transport. (wikipedia.org)
  • When photosystem I absorbs light, an electron is excited to a higher energy level in the P700 chlorophyll. (wikipedia.org)
  • Consequently, in most cases, the electrons transferring within photosystem I follow a linear pathway, from the excitation of the P700 special pair to the production of NADPH. (wikipedia.org)
  • Photosystem I: The Light-Driven Plastocyanin:Ferredoxin Oxidoreductase. (wikipedia.org)
  • P700: the primary electron donor of photosystem I". Biochimica et Biophysica Acta (BBA) - Bioenergetics. (wikipedia.org)
  • The resulting P700 with an excited electron is designated as P700*, which is a strong reducing agent due to its very negative redox potential of -1.2 V. Following the excitation of P700, one of its electrons is passed on to an electron acceptor, Ao, triggering charge separation producing an anionic Ao− and cationic P700+. (wikipedia.org)
  • Thus, the electron is transferred from Fx to another iron sulfur cluster, FA, and then passed on to the last iron-sulfur cluster serving as an electron acceptor, FB. (wikipedia.org)
  • Eventually, the electron is transferred to the protein ferredoxin, causing it to transform into its reduced form, which subsequently finalizes the process by reducing NADP+ to NADPH. (wikipedia.org)
  • In certain situations, it is vital for the photosynthetic organism to recycle the electrons being transferred, resulting in the electron from the terminal iron-sulfur cluster FB transferring back to the cytochrome b6f complex (adaptor between photosystems II and I). Utilizing the energy of P700+, the cyclic pathway creates a proton gradient useful for the production of ATP, while no NADPH is produced, since the protein ferredoxin does not become reduced. (wikipedia.org)
  • In addition, kinetic limitations, such as the coupling of proton to electron transfer during plastoquinone reduction and oxidation and the slow rates of CO 2 fixation by Rubisco reduce photosynthetic efficiency. (biomedcentral.com)
  • Arp2-3 complex binds WASP PROTEIN and existing ACTIN FILAMENTS, and it nucleates the formation of new branch point filaments. (nih.gov)
  • It is expressed at higher levels than ARP2 PROTEIN and does not contain a PROFILIN binding domain. (nih.gov)
  • HN - 2006(1981) BX - Actin-Capping Proteins MH - Actin Depolymerizing Factors UI - D051339 MN - D5.750.78.730.212 MN - D12.776.220.525.212 MS - A family of low MOLECULAR WEIGHT actin-binding proteins found throughout eukaryotes. (nih.gov)