Semiquinona

Isómeros de resonancia dunha semiquinona.

Aa semiquinonas (ou ubisemiquinonas, se a súa orixe é a ubiquinona) son radicais libres que se orixinan pola retirada dun átomo de hidróxeno co seu electrón durante o proceso de deshidroxenación dunha hidroquinona, como a propia hidroquinona (quinol) ou o catecol a unha quinona, ou alternativamente a adición dun só átomo de hidróxeno co seu electrón a unha quinona.[1] As semiquinonas son compostos moi inestables.

Por exemplo, a ubisemiquinona é o primeiro dos dous pasos da redución da forma suplementaria do CoQ10 (ubiquinona) á súa forma activa ubiquinol.

Notas

  1. ↑ 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. PMC 2936108. PMID 20493944. doi:10.1016/j.freeradbiomed.2010.05.009. 
Este artigo tan só é un bosquexo
 Este artigo é, polo de agora, só un bosquexo. Traballa nel para axudar a contribuír a que a Galipedia mellore e medre.

Read other articles:

Dear John (British TV series)

For the American sitcom of the same name, see Dear John (American TV series). British TV series or programme Dear JohnGenreSituation comedyWritten byJohn SullivanStarringRalph BatesBelinda LangPeter DenyerPeter Blake Rachel Bell[1]Country of originUnited KingdomOriginal languageEnglishNo. of series2No. of episodes14ProductionRunning time30 minutesOriginal releaseNetworkBBC1Release17 February 1986 (1986-02-17) –21 December 1987 (1987-12-21)[2]RelatedDear John (...

 

United Kingdom in the Eurovision Song Contest 2023

Eurovision Song Contest 2023Country United KingdomNational selectionSelection processInternal selectionSelection date(s)9 March 2023Selected entrantMae MullerSelected songI Wrote a SongSelected songwriter(s)Holly Mae MullerLewis ThompsonKaren PooleFinals performanceFinal result25th, 24 pointsUnited Kingdom in the Eurovision Song Contest ◄2022 • 2023 • 2024► The United Kingdom participated in and hosted the Eurovision Song Contest 2023 in Liverpool. ...

 

الجيش في مصر القديمة

لوحة الملك (مينا) نارمر موحد القطرين تاريخ مصر القديمة العسكري أنشيء أول جيش نظامي في العالم في مصر، تأسس حوالي سنة 3200 ق.م.[1] وقد كان ذلك بعد توحيد الملك مينا لمصر. فقبل ذلك العام كان لكل إقليم من الأقاليم المصرية جيش خاص به يحميه، ولكن بعد حرب التوحيد المصرية أصبح لمصر جي...

Ap Lei Pai

Uninhabited island in Hong Kong, linked to the south of Ap Lei Chau by a tombolo Ap Lei Pai鴨脷排Ap Lei Pai Island as seen from Ap Lei Chau Island. A tombolo connects the two islands.GeographyCoordinates22°13′50.5554″N 114°9′40.4994″E / 22.230709833°N 114.161249833°E / 22.230709833; 114.161249833Adjacent toEast Lamma ChannelAberdeen ChannelAdministration Hong KongDistrictSouthern DistrictDemographicsPopulationUninhabitedAp Lei PaiTraditional Ch...

 

Bahasa Widal

Untuk mengetahui bentuk-bentuk non-baku atau slang dari bahasa Sunda lainnya, lihat Ragam non-baku dalam bahasa Sunda.Contoh percakapan dalam bahasa Widal Bahasa Widal atau bahasa Sandi Widal (Sunda: ᮘᮞ ᮞᮔ᮪ᮓᮤ ᮝᮤᮓᮜ᮪, translit. basa sandi Widal, pengucapan bahasa Sunda: [basa sani widal])[a] adalah sebuah sebutan untuk ragam non-standar atau laras informal dari bahasa Sunda yang digunakan sebagai bahasa pergaulan masyarakat di wilayah Kelurahan Tipa...

 

Fadeur

Cet article est une ébauche concernant la philosophie. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Consultez la liste des tâches à accomplir en page de discussion. L'eau est fade mais ne dégoûte pas. Sur les autres projets Wikimedia : fade, sur le Wiktionnaire Au sens propre, la fadeur ou le fade caractérise une chose manquant de saveur (insipide) et procurant une sensation gustative faible et dé...

Антитринитаризм

ХристианствоБиблия Ветхий Завет Новый Завет Евангелие Десять заповедей Нагорная проповедь Апокрифы Бог, Троица Бог Отец Иисус Христос Святой Дух История христианства Апостолы Хронология христианства Раннее христианство Гностическое христианство Вселенские соборы Н...

 

Homestead Historic Downtown District

Historic district in Florida, United States This article lacks inline citations besides NRIS, a database which provides minimal and sometimes ambiguous information. Please help ensure the accuracy of the information in this article by providing inline citations to additional reliable sources. (May 2014) (Learn how and when to remove this message) United States historic placeHomestead Historic Downtown DistrictU.S. National Register of Historic PlacesU.S. Historic district Seminole TheatreShow...

 

Mombasa

Mombasa Stad Flygfotografi från maj 2009 Land  Kenya Indelning Kust Folkmängd 938 131 (2009) Geonames 186301 Mombasa är Kenyas näst största stad och ligger i Kustprovinsen i sydöstra delen av landet. Centralorten hade 915 101 invånare vid folkräkningen 2009, med 938 131 invånare inom hela stadsgränsen.[1] Mombasa utgör samtidigt ett distrikt med samma namn på en yta av 230 km².[2] Stadens centrum ligger på ön Mombasa. Stadens namn kommer från arabiska...

Camp Hanuman Temple

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (February 2024) (Learn how and when to remove this message) This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Camp Hanuman Templ...

 

Epithelioid hemangioendothelioma

Medical conditionEpithelioid HemangioendotheliomaMicrograph of an epithelioid hemangioendothelioma of the liver.SpecialtyOncology Epithelioid hemangioendothelioma (EHE) is a rare tumor, first characterized by Sharon Weiss and Franz Enzinger in 1982[1] that both clinically and histologically is intermediate between angiosarcoma and hemangioma. However, a distinct, disease-defining genetic alteration recently described for EHE indicates that it is an entirely separate entity from both a...

 

莎拉·阿什頓-西里洛

莎拉·阿什頓-西里洛2023年8月，阿什頓-西里洛穿著軍服出生 (1977-07-09) 1977年7月9日（46歲） 美國佛羅里達州国籍 美國别名莎拉·阿什頓（Sarah Ashton）莎拉·西里洛（Sarah Cirillo）金髮女郎（Blonde）职业記者、活動家、政治活動家和候選人、軍醫活跃时期2020年—雇主內華達州共和黨候選人（2020年）《Political.tips》（2020年—）《LGBTQ國度》（2022年3月—2022年10月）烏克蘭媒�...

Masco

Construction and Home Improvement Company Masco CorporationCompany typePublicTraded asNYSE: MASS&P 500 componentFounded1929; 95 years ago (1929) (as Masco Screw Products Company)FounderAlex ManoogianHeadquartersLivonia, Michigan, U.S.Key peopleRichard Manoogian(chairman emeritus)[1]Keith J. Allman(president and chief executive officer)Number of employees26,000[2] (2017)Websitemasco.com Ford Motor Company Building (Former Masco Headquarters), Tay...

 

Northern Iraq offensive (August 2014)

Not to be confused with 2014 Islamic State invasion of Iraq. Military campaign This article may require cleanup to meet Wikipedia's quality standards. The specific problem is: Should be partly rewritten to be mainly based on a limited number of existing high reliability sources, with news reports only completing the picture. Please help improve this article if you can. (November 2015) (Learn how and when to remove this message) Northern Iraq offensive (August 2014)Part of the War in IraqDate1...

 

Stadion Kuala Lumpur

Stadion Kuala Lumpur Informasi stadionNama lengkapStadion Asosiasi Sepak Bola Kuala LumpurLokasiLokasi Cheras, Kuala Lumpur, MalaysiaKoordinat3°06′02″N 101°43′17″E / 3.100535°N 101.721371°E / 3.100535; 101.721371Data teknisKapasitas18.000PemakaiKuala Lumpur FASunting kotak info • L • BBantuan penggunaan templat ini Stadion Kuala Lumpur (dikenal juga sebagai Stadion KLFA) adalah sebuah stadion multi-fungsi yang terletak di Cheras, Kuala Lumpur,...

Journée nationale de la vérité et de la réconciliation

Cet article est une ébauche concernant le Canada. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. La Journée nationale de la vérité et de la réconciliation est, au Canada, un jour férié fédéral célébré le 30 septembre qui vise à promouvoir les efforts de réconciliation avec les peuples autochtones. Elle a d'abord été créée comme jour de commémoration en 2013, puis elle est élevée au rang de ...

 

Rodhocetus

Genus of mammals RodhocetusTemporal range: Eocene (Lutetian), 47–46 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Skull of Rodhocetus Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Artiodactyla Infraorder: Cetacea Family: †Protocetidae Subfamily: †Protocetinae Genus: †RodhocetusGingerich et al. 1994 Species †R. kasrani (type)Gingerich et al. 1994 †R. balochistanensisGingerich et al. 2001 Rodhocetus (from Rodho, the geologica...

 

Jaclyn Sawicki

Filipino footballer (born 1992) In this Philippine name, the middle name or maternal family name is Demis and the surname or paternal family name is Sawicki. Jaclyn Sawicki Sawicki in 2022Personal informationFull name Jaclyn Katrina Demis Sawicki[1]Birth name Jaclyn Katrina Sawicki[2]Date of birth (1992-11-14) November 14, 1992 (age 31)Place of birth Coquitlam, British Columbia, CanadaHeight 1.58 m (5 ft 2 in)Position(s) MidfielderTeam informationC...

Michael Schulz

Questa voce sull'argomento calciatori tedeschi è solo un abbozzo. Contribuisci a migliorarla secondo le convenzioni di Wikipedia. Segui i suggerimenti del progetto di riferimento. Michael SchulzNazionalità Germania Ovest Germania (dal 1990) Altezza194 cm Calcio RuoloDifensore Termine carriera1997 CarrieraGiovanili  Kaiserslautern Squadre di club1 1987-1989 Kaiserslautern51 (3)1989-1994 Borussia Dortmund133 (4)1994-1997 Werder Brema59 (1) Nazionale 1992-1993 Ge...

 

Beauharnois (ville)

Pour l’article homonyme, voir Beauharnois. Beauharnois Ville de Beauharnois Pont Préville Administration Pays Canada Province Québec[1] Région Montérégie Subdivision régionale Beauharnois-Salaberry Statut municipal Ville Maire Mandat Alain Dubuc 2021-2025 Code postal J6N Constitution 2002 Démographie Gentilé Beauharlinois, Beauharlinoise Population 13 638 hab.[2] (2021) Densité 203 hab./km2 Géographie Coordonnées 45° 19′ nord, 73° 52′ oue...