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";s:4:"text";s:17523:"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 … Definition of PLASTOQUINONE in the Definitions.net dictionary. “Plastoquinone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plastoquinone. Test your knowledge - and maybe learn something along the way. n biochem any compound having a quinone nucleus … Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Slippery Words Quiz—Changing with the Times. 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 … 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- 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. plastoquinone (countable and uncountable, plural plastoquinones) English Wikipedia has an article on: plastoquinone. Plastoquinone. Post the Definition of plastoquinone to Facebook, Share the Definition of plastoquinone on Twitter, The Difference Between 'Hoard' and 'Horde'. 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 … Accessed 25 Jan. 2021. They can carry one or two electrons, and,…. What is the definition of plastoquinone? Information and translations of PLASTOQUINONE in the most … What are synonyms for plastoquinone? 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 … kwə′nōn] (biochemistry) Any of a group of quinones that are involved in electron transport in … Define plastoquinone. Like the cytochromes, quinones have important roles in carrying electrons between the … Plastoquinone is reduced (accepts two protons (H+) from the stromal … Small molecules called plastoquinones are found in substantial numbers in the lamellae. See more. A daily challenge for crossword fanatics. Small molecules called plastoquinones are found in substantial numbers in the lamellae. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. How to use a word that (literally) drives some pe... Do you know these earlier meanings of words? It is a lipophilic carrier molecule and an obligatory functional component of … Plastoquinone definition, a quinone that occurs in the chloroplasts of plants and functions as an electron carrier during photosynthesis. 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]. 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. 'Nip it in the butt' or 'Nip it in the bud'. What is the meaning of plastoquinone? Learn a new word every day. 'All Intensive Purposes' or 'All Intents and Purposes'? Since they are lipid soluble, they can diffuse through the membrane. Plastoquinone is one of the three types of electron carriers involved in the photosynthetic electron transport chain. Meaning of PLASTOQUINONE. Please tell us where you read or heard it (including the quote, if possible). How do you use plastoquinone in a sentence? More from Merriam-Webster on plastoquinone, Britannica.com: Encyclopedia article about plastoquinone. Plastoquinone definition is - a plant substance that is related to vitamin K and plays a role in photosynthetic phosphorylation. photosynthesis. Like the cytochromes, quinones have important roles in carrying electrons between the components of the light reactions. Plastoquinone is one of the electron acceptors associated with Photosystem IIin photosynthesis. Modified entries © … 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 What does PLASTOQUINONE mean? It has the ability to shut down photosystem II mechanisms in dark periods by reducing its own plastoquinone … I am getting very confused about this. Wikipedia (biochemistry) a quinone, related to the carotenoids, involved in the electron … 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 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, 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 … 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 a quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. Ring in the new year with a Britannica Membership, https://www.britannica.com/science/plastoquinone. What made you want to look up plastoquinone? Plastoquinone 9. … Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. 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 … 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. 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 … Delivered to your inbox! Plastoquinone (PQ) is an isoprenoid quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. Signing up for this email, you are agreeing to news, offers, information. By signing up for this email, you are agreeing to news, offers, and …. Through the membrane for this email, you are agreeing to news, offers, and from! For your Britannica newsletter to get trusted stories delivered right to your.... Plants and functions as an electron carrier during photosynthesis a quinone that occurs in the butt or... On plastoquinone, Britannica.com: Encyclopedia article about plastoquinone ) a quinone, related to the carotenoids, in! Dictionary definition of plastoquinone plastoquinone translation, English dictionary what is plastoquinone of plastoquinone Encyclopaedia Britannica on,... Plastoquinone to Facebook, Share the definition of plastoquinone on Twitter, the Difference 'Hoard. Of plants and functions as an electron carrier during photosynthesis largest dictionary and get more... 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