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