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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/09/04 17:10:29」(JST)
[Wiki en表示]
Semiquinone (or ubisemiquinone) is a free radical resulting from the removal of one hydrogen atom with its electron during the process of dehydrogenation of a hydroquinone to quinone or alternatively the addition of a single H atom to a quinone.[1] It is highly unstable.
It is the first of two stages in reducing the supplementary form of CoQ10 ubiquinone to the active form ubiquinol.
References
- ^ Song, Y; Buettner, GR (Sep 15, 2010). "Thermodynamic and kinetic considerations for the reaction of semiquinone radicals to form superoxide and hydrogen peroxide.". Free radical biology & medicine 49 (6): 919–62. doi:10.1016/j.freeradbiomed.2010.05.009. PMC 2936108. PMID 20493944.
English Journal
- Efficiency of emulsifier-free emulsions and emulsions containing rapeseed lecithin as delivery systems for vectorization and release of coenzyme Q10: physico-chemical properties and in vitro evaluation.
- Kaci M1, Arab-Tehrany E2, Dostert G3, Desjardins I4, Velot E3, Desobry S5.
- Colloids and surfaces. B, Biointerfaces.Colloids Surf B Biointerfaces.2016 Nov 1;147:142-50. doi: 10.1016/j.colsurfb.2016.07.036. Epub 2016 Jul 19.
- To improve the encapsulation and release of coenzyme Q10 (CoQ10), emulsifier-free-emulsions were developed with a new emulsification process using high-frequency ultrasound (HFU) at 1.7MHz. Nano-emulsions containing CoQ10 were prepared with or without rapeseed lecithin as an emulsifier. The emulsion
- PMID 27497933
- An Improvement of Oxidative Stress in Diabetic Rats by Ubiquinone-10 and Ubiquinol-10 and Bioavailability after Short- and Long-Term Coenzyme Q10 Supplementation.
- Prangthip P1, Kettawan A2, Posuwan J3, Okuno M4, Okamoto T4.
- Journal of dietary supplements.J Diet Suppl.2016 Nov;13(6):647-59. doi: 10.3109/19390211.2016.1164788. Epub 2016 Apr 11.
- This study explored effects of ubiquinol-10 and ubiquinone-10, two different forms of coenzyme Q10, in diabetic rats. Oxidative stress is characterized by the depletion of antioxidant defenses and overproduction of free radicals that might contribute to, and even accelerate, the development of diabe
- PMID 27064932
- Efficient synthesis and antioxidant activities of N-heterocyclyl substituted Coenzyme Q analogues.
- Wang J1, Xia F2, Jin WB2, Guan JY2, Zhao H2.
- Bioorganic chemistry.Bioorg Chem.2016 Oct;68:214-8. doi: 10.1016/j.bioorg.2016.08.008. Epub 2016 Aug 18.
- A new strategy for the efficient synthesis of C-5 heterocyclyl substituted Coenzyme Q analogues was developed by N-alkylation of bromomethylated quinone 11 with a series of amines 12 under metal-free conditions. In vitro antioxidant activities of these Coenzyme Q analogues were evaluated and compare
- PMID 27561631
Japanese Journal
- ミトコンドリア電子伝達系の阻害剤とその作用機構(農薬生物活性の新しい流れ)
- Transient formation of ubisemiquinone radical and subsequent electron transfer processes in the Escherichia coli cytochrome bo revealed by pulse radiolysis
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- ubisemiquinone definition from the mondofacto online medical dictionary ... Bookmark with: word visualiser Go and visit our forums
- How would you define ubisemiquinone? Add your definition here. Words near ubisemiquinone in the dictionary ubiquitylated ubiquitylates ubiquitylating ubiquitylation ubisemiquinone ubisindine ubistatin ubistatins UBL UBM ...
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