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