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Quinone - an overview | ScienceDirect Topics
Quinones are ubiquitous biological pigments found in a range of living organisms (bacteria, fungi, higher plants, and in few animals). They exist in nature in many forms such as benzoquinones, naphthoquinones, anthraquinones, and polycyclic quinones. For example, the K vitamins (phylloquinone) are naphthoquinones.
www.sciencedirect.com
www.sciencedirect.com
Quinone - Wikipedia
The quinones are a class of organic compounds that are formally derived from aromatic compounds [such as benzene or naphthalene]
en.wikipedia.org
en.wikipedia.org
Quinone | C6H4O2 | CID 4650 - PubChem
This is an endogenously produced metabolite found in the human body. It is used in metabolic reactions, catabolic reactions or waste generation. Toxin and Toxin ...
pubchem.ncbi.nlm.nih.gov
pubchem.ncbi.nlm.nih.gov
quinone
quinone Chem. (ˈkwɪnəʊn, kwɪˈnəʊn) Also 9 kinone. [f. quin-a + -one.] a. spec. A crystalline compound (benzoquinone, C6H4O2), the simplest type of the class of quinones. b. Any one of a series of aromatic compounds derived from the benzene series of hydrocarbons when two hydrogen atoms are replaced ...
Oxford English Dictionary
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NIOSH Pocket Guide to Chemical Hazards - Quinone - CDC
Pale-yellow solid with an acrid, chlorine-like odor. Molecular Weight. 108.1. Boiling Point. Sublimes. Melting Point. 240°F. Solubility. Slight. Vapor Pressure.
www.cdc.gov
www.cdc.gov
Quinone | Definition & Uses - Britannica
Quinone, any member of a class of cyclic organic compounds containing two carbonyl groups, C = O, either adjacent or separated by a vinylene group.
www.britannica.com
www.britannica.com
26.2: Quinones - Chemistry LibreTexts
Quinones are not aromatic compounds but are conjugated cyclic diketones. Yet it is convenient to discuss their chemistry at this point.
chem.libretexts.org
chem.libretexts.org
QUINONE Definition & Meaning - Merriam-Webster
1. Either of two isomeric cyclic crystalline compounds C 6 H 4 O 2 that are derivatives of benzene. 2. Any of various usually yellow, orange, or red quinonoid ...
www.merriam-webster.com
www.merriam-webster.com
Quinone - an overview | ScienceDirect Topics
Quinone is formed as yellow crystals and has a characteristic irritating odor like that of chlorine. It is slightly soluble in water, alcohol, ether, hot ...
www.sciencedirect.com
www.sciencedirect.com
[PDF] Quinone (p-Benzoquinone) - Environmental Protection Agency (EPA)
Acute (short-term) exposure to high levels of quinone, via inhalation in humans, results in irritation of the eyes, consisting of discoloration of the ...
www.epa.gov
www.epa.gov
Ribosyldihydronicotinamide dehydrogenase (quinone)
Other names in common use include NRH:quinone oxidoreductase 2, NQO2, NQO2, NAD(P)H:quinone oxidoreductase-2 (misleading), QR2, quinone reductase 2, N-ribosyldihydronicotinamide dehydrogenase (quinone), and NAD(P)H:quinone oxidoreductase2 (misleading).
wikipedia.org
en.wikipedia.org
Dihydroorotate dehydrogenase (quinone)
This enzyme catalyses the electron transfer from dihydroorotate (electron donor) to a quinone (electron acceptor):
(S)-dihydroorotate + quinone orotate This region of the protein is also thought to mediate quinone binding.
wikipedia.org
en.wikipedia.org
Thiosulfate dehydrogenase (quinone)
In enzymology, a thiosulfate dehydrogenase (quinone) () is an enzyme that catalyzes the chemical reaction
2 thiosulfate + 2 6-decylubiquinone tetrathionate Other names in common use include thiosulfate:quinone oxidoreductase, thiosulphate:quinone oxidoreductase, thiosulfate oxidoreductase, tetrathionate-forming
wikipedia.org
en.wikipedia.org
Malate dehydrogenase (quinone)
(S)-malate + a quinone oxaloacetate + reduced quinone
Thus, the two substrates of this enzyme are (S)-malate and a quinone, whereas its two products are oxaloacetate and reduced quinone.
wikipedia.org
en.wikipedia.org
Quinate dehydrogenase (quinone)
Quinate dehydrogenase (quinone) (, NAD(P)+-independent quinate dehydrogenase, quinate:pyrroloquinoline-quinone 5-oxidoreductase) is an enzyme with systematic This enzyme catalyses the following chemical reaction
quinate + quinone 3-dehydroquinate + quinol
This enzyme is membrane-bound.
wikipedia.org
en.wikipedia.org