What is the meaning of plastoquinone? Definition of PLASTOQUINONE in the Definitions.net dictionary. It is a lipophilic carrier molecule and an obligatory functional component of … 9 (PQ-9), , plastoquinone E9 ( plas'tō-kwin'ōn ), 2,3-Dimethyl-6-nonaprenyl-1,4-benzoquinone; one of a group of vitamins E and K and coenzymes Q; the isomeric form is … Post the Definition of plastoquinone to Facebook, Share the Definition of plastoquinone on Twitter, The Difference Between 'Hoard' and 'Horde'. Information and translations of PLASTOQUINONE in the most … … Please tell us where you read or heard it (including the quote, if possible). I am getting very confused about this. Test your knowledge - and maybe learn something along the way. Plastoquinone (PQ) and ubiquinone (UQ) are two important prenylquinones, functioning as electron transporters in the electron transport chain of oxygenic photosynthesis and the aerobic … plastoquinone A quinone, found in chloroplasts, that functions as one of the carrier molecules of the electron transport chain in the light-dependent reactions of photosynthesis. Plastoquinone is one of the three types of electron carriers involved in the photosynthetic electron transport chain. What is the definition of plastoquinone? A daily challenge for crossword fanatics. Accessed 25 Jan. 2021. Plastoquinone (PQ) is a quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. The most common form of plastoquinone, known as PQ … Among the other electron carriers of the photosynthetic electron transport chain, plastoquinone is unique as it not only shuttles electrons but also simultaneously protons across the thylakoid membrane during its catalytic … Plastoquinone is reduced (accepts two protons (H+) from the stromal … NEET 2020: In light reaction, plastoquinone facilitates the transfer of electrons from: (A) PS-II to Cytb6f complex (B) Cytb6f complex to PS-I (C) PS- How do you use plastoquinone in a sentence? Mitochondria-targeted antioxidants are usually chimeric molecules of a cation triphenylphosphonium (TPP) conjugated with an antioxidant moiety such as coenzyme [Q.sub.10] or plastoquinone [53, 54]. Plastoquinone is a small, lipid-soluble molecule that can move laterally in the thylakoid to serve its function as a mediator of electron flow between the much larger, and relatively immobile, PS II and … Plastoquinone 9. What are synonyms for plastoquinone? Like the cytochromes, quinones have important roles in carrying electrons between the components of the light reactions. Small molecules called plastoquinones are found in substantial numbers in the lamellae. More from Merriam-Webster on plastoquinone, Britannica.com: Encyclopedia article about plastoquinone. Delivered to your inbox! 'Nip it in the butt' or 'Nip it in the bud'. photosynthesis. Slippery Words Quiz—Changing with the Times. “Plastoquinone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plastoquinone. Plastoquinone (PQ) and ubiquinone (UQ) are two important prenylquinones, functioning as electron transporters in the electron transport chain of oxygenic photosynthesis and the aerobic respiratory … Polyunsaturated side-chain quinone derivative which is an important link in the electron transport chain of green plants during the photosynthetic conversion of light energy by … Plastoquinone definition, a quinone that occurs in the chloroplasts of plants and functions as an electron carrier during photosynthesis. Define plastoquinone. See more. My understanding so far is that ubiquinone is used as an electron (and proton) carrier in oxidative phosphorylation in the mitochondria whereas plastoquinone is the … Wikipedia (biochemistry) a quinone, related to the carotenoids, involved in the electron … Polyunsaturated side-chain quinone derivative which is an important link in the electron transport chain of green plants during the photosynthetic conversion of light energy by photophosphorylation into … Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! How to use a word that (literally) drives some pe... Do you know these earlier meanings of words? Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Plastoquinone. a quinone that occurs in the chloroplasts of plants and functions as an electron carrier during photosynthesis Most material © 2005, 1997, 1991 by Penguin Random House LLC. 'All Intensive Purposes' or 'All Intents and Purposes'? Plastoquinone, like coenzyme Q, is reduced to the hydroquinone form, which is part of an electron-transport chain involving iron- and copper-containing proteins: Among other naturally … kwə′nōn] (biochemistry) Any of a group of quinones that are involved in electron transport in … It accepts two electrons and is reduced to Plastoquinol and as such acts as an electron and energy … plastoquinone synonyms, plastoquinone pronunciation, plastoquinone translation, English dictionary definition of plastoquinone. They can carry one or two electrons, and,…. Any of a homologous series of compounds which have a quinone nucleus with a terpenoid side chain; specifically one of these occurring in the chloroplasts of plants and involved in electron transfer during … What does PLASTOQUINONE mean? Plastoquinone definition is - a plant substance that is related to vitamin K and plays a role in photosynthetic phosphorylation. Small molecules called plastoquinones are found in substantial numbers in the lamellae. Ring in the new year with a Britannica Membership, https://www.britannica.com/science/plastoquinone. Learn a new word every day. Plastoquinone is one of the electron acceptors associated with Photosystem IIin photosynthesis. plastoquinone (countable and uncountable, plural plastoquinones) English Wikipedia has an article on: plastoquinone. Plastoquinone (PQ) is an isoprenoid quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. n biochem any compound having a quinone nucleus … Like the cytochromes, quinones have important roles in carrying electrons between the … What made you want to look up plastoquinone? It has the ability to shut down photosystem II mechanisms in dark periods by reducing its own plastoquinone … What triose phosphate does (1) Used to make starch: two combine into hexose phosphate, and many of these combine to form starch (2) ATP is used to convert into RuBP to restart the Calvin cycle Since they are lipid soluble, they can diffuse through the membrane. Modified entries © … Meaning of PLASTOQUINONE. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Diffuse through the membrane from Encyclopaedia Britannica biochemistry ) a quinone that occurs in the chloroplasts of plants functions! ( biochemistry ) a quinone, related to the carotenoids, involved the! Know these earlier meanings of words the Difference between 'Hoard ' and 'Horde ' functional! … what is plastoquinone am getting very confused about this definition of plastoquinone on Twitter, the between! 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