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 synonyms, plastoquinone pronunciation, plastoquinone translation, English dictionary definition of plastoquinone. Please tell us where you read or heard it (including the quote, if possible). Plastoquinone definition, a quinone that occurs in the chloroplasts of plants and functions as an electron carrier during photosynthesis. See more. Meaning of PLASTOQUINONE. Define plastoquinone. Slippery Words Quiz—Changing with the Times. 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 … 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 … It accepts two electrons and is reduced to Plastoquinol and as such acts as an electron and energy … Learn a new word every day. Definition of PLASTOQUINONE in the Definitions.net dictionary. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. plastoquinone (countable and uncountable, plural plastoquinones) English Wikipedia has an article on: plastoquinone. Plastoquinone definition is - a plant substance that is related to vitamin K and plays a role in photosynthetic phosphorylation. Plastoquinone 9. … 'All Intensive Purposes' or 'All Intents and Purposes'? The most common form of plastoquinone, known as PQ … 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 kwə′nōn] (biochemistry) Any of a group of quinones that are involved in electron transport in … photosynthesis. 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. Test your knowledge - and maybe learn something along the way. It has the ability to shut down photosystem II mechanisms in dark periods by reducing its own plastoquinone … Plastoquinone is one of the electron acceptors associated with Photosystem IIin photosynthesis. 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 … 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 … What is the definition of plastoquinone? 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 … It is a lipophilic carrier molecule and an obligatory functional component of … Information and translations of PLASTOQUINONE in the most … Accessed 25 Jan. 2021. A daily challenge for crossword fanatics. 'Nip it in the butt' or 'Nip it in the bud'. Plastoquinone is one of the three types of electron carriers involved in the photosynthetic electron transport chain. 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 … 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- 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 … Small molecules called plastoquinones are found in substantial numbers in the lamellae. Post the Definition of plastoquinone to Facebook, Share the Definition of plastoquinone on Twitter, The Difference Between 'Hoard' and 'Horde'. Plastoquinone is reduced (accepts two protons (H+) from the stromal … How to use a word that (literally) drives some pe... Do you know these earlier meanings of words? Since they are lipid soluble, they can diffuse through the membrane. I am getting very confused about this. Plastoquinone. Delivered to your inbox! 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. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! 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 (PQ) and ubiquinone (UQ) are two important prenylquinones, functioning as electron transporters in the electron transport chain of oxygenic photosynthesis and the aerobic … Plastoquinone (PQ) is an isoprenoid quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. What does PLASTOQUINONE mean? Modified entries © … How do you use plastoquinone in a sentence? They can carry one or two electrons, and,…. Ring in the new year with a Britannica Membership, https://www.britannica.com/science/plastoquinone. “Plastoquinone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plastoquinone. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. 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 … Like the cytochromes, quinones have important roles in carrying electrons between the components of the light reactions. More from Merriam-Webster on plastoquinone, Britannica.com: Encyclopedia article about plastoquinone. Small molecules called plastoquinones are found in substantial numbers in the lamellae. What is the meaning of plastoquinone? What are synonyms for plastoquinone? What made you want to look up plastoquinone? Plastoquinone (PQ) is a quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. 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