Results 1 to 10 of about 64,113 (206)

A novel quinone: Quinone methide isomerase generates quinone methides in insect cuticle

FEBS Letters, 1988
Insoluble cuticle‐bound enzyme(s) of Manduca sexta pharate pupae, which is known to convert N‐acetyldopamine to N‐acetylnorepinephrine through the intermediate formation of quinone methide, also converted exogenously supplied N‐acetyldopamine quinone to N‐acetylnorepinephrine.
Manickam Sugumaran
exaly   +3 more sources

Quinone Reductase 2 Is a Catechol Quinone Reductase [PDF]

Journal of Biological Chemistry, 2008
The functions of quinone reductase 2 have eluded researchers for decades even though a genetic polymorphism is associated with various neurological disorders. Employing enzymatic studies using adrenochrome as a substrate, we show that quinone reductase 2 is specific for the reduction of adrenochrome, whereas quinone reductase 1 shows no activity.
Yue, Fu, Leonid, Buryanovskyy, Zhongtao, Zhang   +2 more
openaire   +2 more sources

Quinone and non-quinone redox couples in Complex III [PDF]

Journal of Bioenergetics and Biomembranes, 2008
The Q cycle mechanism proposed by Peter Mitchell in the 1970's explicitly considered the modification of ubiquinone two-electron redox properties upon binding to Complex III to match the thermodynamics of the other single-electron redox cofactors in the complex, and guide electron transfer to support the generation of a proton electro-chemical gradient
Zhang, Haibo, Chobot, Sarah E., Osyczka, Artur, Wraight, Colin A., Dutton, P. Leslie, Moser, Christopher C.   +5 more
openaire   +3 more sources

Electrocoagulation of Quinone Pigments [PDF]

Molecules, 2006
Some representative quinones, viz. one naphthoquinone (plumbagin) and five anthraquinones (alizarin, purpurin, chrysazin, emodin, and anthrarufin), were subjected to electrocoagulation. It was found that the rate and extent of coagulation of these compounds appears to correlate with the number and relative position of their phenolic substituent groups,
Chairungsi, Neeranuch, Jumpatong, Kanlaya, Suebsakwong, Patiwat, Sengpracha, Waya, Phutdhawong, Weerachai, Buddhasukh, Duang   +5 more
openaire   +3 more sources

quinones

, 2014
Citation: 'quinones' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.Q05015 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Mitochondrial complex I as a master regulator of redox signaling: From structural architecture to directionality of electron transport. [PDF]

Free Radic Biol Med
Khodadadi E, Lu B.
europepmc   +1 more source

Visualizing the mechanism of quinol oxidation and inhibition of a <i>bd</i>-type oxidase using cryo-EM. [PDF]

Sci Adv
van der Velden TT, Kayastha K, Pelser F, Brünle S, Jeuken LJC.   +4 more
europepmc   +1 more source

Apiol from Parsley Seeds as a Source for the Synthesis of Coenzyme Q₀ Propanoic Acid Conjugates with Amines Featuring Antioxidant Activity. [PDF]

ACS Omega
Adaeva OI, Demchuk DV, Shevchenko OG, Semenova MN, Semenov VV.   +4 more
europepmc   +1 more source

The Anionic States of Ubiquinone Characterized by Second-Order Approximate Coupled-Cluster Theory. [PDF]

J Comput Chem
Gascón M, Moorby RE, Jagau TC.
europepmc   +1 more source

Sulfone-quinone derivatives: a review on their synthetic methods, properties and applications. [PDF]

RSC Adv
Ghali F, Keshe M.
europepmc   +1 more source