Pentose

Estrutura da D-ribose, uma aldo-pentose, na projeção de Fischer.

Pentoses são monossacarídeos (glícidos simples) compostos por cinco carbonos[1]. Para os seres vivos, as pentoses mais importantes são a ribose e a desoxirribose, que são as componentes estruturais dos ácidos nucleicos, os quais comandam as funções celulares[2]. Podem ser classificadas em aldo-pentoses, caso possuam uma função aldeído (grupamento carbonila terminal), ou ceto-pentoses, caso possuam uma função cetona (grupamento carbonila entre radicais)[3]. As pentoses apresentam a fórmula molecular [4].

A desoxirribose é a pentose que entra na composição química do ácido desoxirribonucleico (ADN), enquanto a ribose entra na constituição do ácido ribonucleico (ARN). A nomenclatura de trioses, tetroses, pentoses e hexoses foi desenvolvida por Emil Fischer, dando a todos e quaisquer tipos de açúcares a terminação "-ose", a partir dos seus estudos de carboidratos iniciados em 1880. Fischer também endossou os termos aldose e cetose, propostos por James Armstrong, estudioso da área de orgânica geral e bioquímica[3].

Referências

  1. ↑ «Pentose | Definition by Merriam-Webster Dictionary». Merriam-Webster's Dictionary. Consultado em 15 de julho de 2020 
  2. ↑ «Nucleic acid | Definition, Function, Structure & Types | Encyclopedia Brittanica». Encyclopedia Brittanica. Consultado em 15 de julho de 2020 
  3. ↑ a b Nomenclature of Carbohydrates, site da IUPAC
  4. ↑ «Pentose | C5H10O5». PubChem. Consultado em 15 de julho de 2020 
Ícone de esboço Este artigo sobre um composto orgânico é um esboço. Você pode ajudar a Wikipédia expandindo-o.

Read other articles:

Daman dan Diu

Daman dan Diu Peta India dengan letak Daman dan Diu ditandai. Ibu kota - Koordinat Daman - 20°15′N 72°34′E / 20.25°N 72.57°E / 20.25; 72.57 Kota terbesar Daman Populasi (2011) - Kepadatan 243.247 (Ke-6) - 2.172/km² Area - Distrik 112 km² (Ke-6) - 2 Zona waktu UTC +5:30 Pembentukan - Administrator 30 Mei 1987 - Arun Mathur Bahasa resmi Marathi, Gujarati, Inggri...

 

Alternative Press

Alternative PressEditor In ChiefJason PettigrewKategoriMajalah musikFrekuensiPer bulanPenerbitAlternative Press Magazine, Inc.Terbitan pertamaJuni 1985NegaraAmerika SerikatBahasaInggrisSitus webwww.altpress.comISSN1065-1667 Alternative Press, (disingkat: AP) adalah sebuah majalah musik Amerika yang berbasis di Cleveland, Ohio. Majalah ini biasanya menyediakan wawancara band, foto, informasi pada rilis mendatang, dan chart musik untuk pembaca. Alternative Press dirikan pada tahun 1985 oleh Mik...

 

Masjid Agung Jawa Tengah

Masjid Agung Jawa Tengahالجامع الكبير جاوة الوسطىꦩꦱ꧀ꦗꦶꦢ꧀​ꦄꦒꦼꦁ​​ꦗꦮꦶ​ꦩꦢꦾMasjid Agêng Jawi MadyaMasjid Agung Jawa TengahAgamaAfiliasiIslam – SunniProvinsi Jawa TengahLokasiLokasiSemarangNegara IndonesiaArsitekturArsitekIr. H. Ahmad FananiTipeMasjidGaya arsitekturPerpaduan arsitektur Jawa dan ArabPeletakan batu pertama6 September 2002 Luas 10.000 M2Rampung14 November 2006SpesifikasiKapasitas6.000 ditambah 10.000 jamaah (...

Tama (instrument)

Pour les articles homonymes, voir Tama. Ne doit pas être confondu avec Tam-tam. Un tama. Le tama (sérère[1],[2], wolof, mandingue[2], bambara) gangan, dumdum (yoruba), kalangu (hausa, songhaï), odondo (akan), lunna (dagomba), karangou ou kalangou, appelé également « le tambour parlant », est un instrument de percussion de la famille des membranophones originaire d'Afrique de l'Ouest. Des instruments semblables existent en Inde (huruk) et au Japon (ōtsuzumi). Histoire Dans ...

 

List of Hong Kong films of 2021

This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (November 2022) (Learn how and when to remove this template message) Cinema of Hong Kong 1909–1949 1950s 1950 1951 1952 1953 19541955 1956 1957 1958 1959 1960s 1960 1961 1962 1963 19641965 1966 1967 1968 1969 1970s 1970 1971 1972 1973 19741975 1976 1977 1978 1979 1980s 1980 1981 1982 1983 19841985 1986 1987 198...

 

Killarney House

The original Killarney House, which burnt down in 1913. Corridor, Killarney House Killarney House, County Kerry, Ireland (c 1898) Killarney House is an Irish country home in Killarney, County Kerry, which was built as a replacement for Kenmare House (1726) as the seat of the Earls of Kenmare. The site was chosen by Queen Victoria on her visit to Ireland in 1861. First Killarney House It was The 4th Earl of Kenmare who decided to build a new mansion on a hillside with views of Lough Leane in ...

Rockstar Leeds

British video game developer Rockstar Leeds LimitedFormerlyMöbius Entertainment Limited (1997–2004)Company typeSubsidiaryIndustryVideo gamesFoundedDecember 1997; 26 years ago (1997-12) in Stanningley, Pudsey, EnglandFoundersIan J. BowdenDave BoxGordon HallJason McGannHeadquartersHolbeck, Leeds, EnglandKey peopleAlastair Dukes (studio director)Number of employees≈70 (2007)ParentRockstar Games (2004–present) Rockstar Leeds Limited (formerly Möbius Entertainme...

 

Sonnie Hale

English actor and director Sonnie HaleCigarette card, 1934BornJohn Robert Hale-Monro[1](1902-05-01)1 May 1902London, EnglandDied9 June 1959(1959-06-09) (aged 57)London, EnglandOccupationsActorscreenwriterdirectorSpouses Evelyn Laye ​ ​(m. 1926; div. 1930)​ Jessie Matthews ​ ​(m. 1931; div. 1944)​ Mary Kelsey ​ ​(m. 1947; div. 1957)​ Child...

 

Under the Gun Theater

Theater in Chicago, Illinois Under the Gun TheaterUnder the Gun TheaterAddress956 W. Newport AvenueChicago, IllinoisUnited StatesCoordinates41°56′41″N 87°39′14″W / 41.9446°N 87.6540°W / 41.9446; -87.6540OwnerAngie McMahon (executive director)[1]Current useStand-up comedyImprovisational comedySketch comedy Comedic playsOpened2014Websitewww.underthegun.theater Under the Gun Theater is a theater company located in Chicago, Illinois. Founded by Angie Mc...

St. Helena (California)

Questa voce sull'argomento centri abitati della California è solo un abbozzo. Contribuisci a migliorarla secondo le convenzioni di Wikipedia. Segui i suggerimenti del progetto di riferimento. St. HelenacomuneCity of St. Helena St. Helena – VedutaChiesa di Santa Helena LocalizzazioneStato Stati Uniti Stato federato California ConteaNapa TerritorioCoordinate38°30′10″N 122°28′11″W / 38.502778°N 122.469722°W38.502778; -122.469722 (St. Helena)Coordi...

 

Arrah-na-Pogue (film)

1911 American filmArrah-na-PogueFrom left to right: Robert Vignola, Sidney Olcott and Gene Gauntier.Directed bySidney OlcottWritten byGene GauntierBased onArrah-na-Pogueby Dion BoucicaultProduced bySidney OlcotStarring Gene Gauntier Jack J. Clark JP McGowan Robert Vignola CinematographyGeorge K. HollisterMusic byWalter C. SimonProductioncompanyKalem CompanyDistributed byGeneral Film CompanyRelease date December 4, 1911 (1911-12-04) CountryUnited StatesLanguagesSilent film(Engli...

 

Penobatan Raja Prancis

Pemahkotaan Louis VIII dari Prancis dan Blanca dari Kastilia di Reims pada tahun 1223; sebuah miniature dari Tarikh Agung dari Prancis, skt. 1450. Kenaikan takhta Raja Prancis disahkan oleh upacara pemahkotaan dilakukan dengan Pemahkotaan Charlemagne di Notre-Dame de Reims. Namun seseorang tidak perlu dinobatkan agar dapat diakui sebagai raja Prancis; raja yang baru naik takhta ketika peti mati raja sebelumnya dikebumikan di Basilika Santo Denis, dan Adipati Uzes mengumumkan Le Roi est mort, ...

Luis Fayad

Este artículo o sección tiene referencias, pero necesita más para complementar su verificabilidad. Busca fuentes: «Luis Fayad» – noticias · libros · académico · imágenesEste aviso fue puesto el 17 de abril de 2020. Luis Fayad Información personalNacimiento 16 de agosto de 1945 (78 años)Bogotá (Colombia) Nacionalidad ColombianaEducaciónEducado en Universidad Nacional de Colombia Información profesionalOcupación Periodista, crítico literario, escritor, pro...

 

NATO Submarine Rescue System

Project to develop an international submarine rescue system 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: NATO Submarine Rescue System – news · newspapers · books · scholar · JSTOR (August 2015) (Learn how and when to remove this message) NSRS in 2011. The NATO Submarine Rescue System (NSRS) is a tri-natio...

 

Coloman, King of Hungary

King of Hungary from 1095 to 1116 Coloman the LearnedColoman depicted in János Thuróczy's Chronicle of the HungariansKing of HungaryReign1096 – 3 February 1116Coronationspring of 1096, SzékesfehérvárPredecessorLadislaus ISuccessorStephen IIKing of CroatiaReign1097 – 3 February 1116Coronation1102, BiogradPredecessorPetar SnačićSuccessorStephen IIBornc. 1070Died3 February 1116 (aged 45–46)BurialSzékesfehérvár BasilicaSpousesFelicia of SicilyEufemia of KievIssuemore...So...

Igigi of Akkad

King of the Akkadian King For a general use, see Igigi. IgigiKing of AkkadKing of SumerKing of the Akkadian EmpireReignc. 2193-2192  BCPredecessorShar-Kali-SharriSuccessorImi Igigi, according to the Sumerian King List, was one of four rivals (the others being Ilulu, Imi, and Nanum) vying to be king of the Akkadian Empire during a three-year period following the death of Shar-kali-sharri.[1] This chaotic period came to an end when Dudu consolidated his power over the realm. See al...

 

University of Santo Tomas Baybayin Documents

17th century land deeds University of Santo Tomas Baybayin DocumentsCreated1613 (Document A) and 1625 (Document B)LocationArchives of the University of Santo TomasPurposeTransfer of land ownership The University of Santo Tomas Baybayin Documents or UST Baybayin Documents are two 17th century land deeds written in Baybayin script. Due to their historical significance, the documents were declared as a National Cultural Treasure by the National Archives of the Philippines Director Victorino Mana...

 

Second Anglo-Dutch War

Naval conflict from 1665 to 1667 Second Anglo-Dutch WarPart of the Anglo-Dutch WarsThe Four Days' Battle, 1–4 June 1666, by Abraham StorckDate4 March 1665 – 31 July 1667 (1665-03-04 – 1667-07-31)LocationNorth Sea, English Channel, North America, West Africa, East Indies, The Guianas, and the CaribbeanResult Treaty of BredaTerritorialchanges Dutch Republic cedes New Amsterdam to England, England cedes English Guiana, Fort Cormantin and the island of Run...

كأس إفريقيا للأندية البطلة 1971

يفتقر محتوى هذه المقالة إلى الاستشهاد بمصادر. فضلاً، ساهم في تطوير هذه المقالة من خلال إضافة مصادر موثوق بها. أي معلومات غير موثقة يمكن التشكيك بها وإزالتها. (مارس 2016) كأس إفريقيا للأندية البطلة 1971 كأس البطولة الأول (من 1964 إلى 1977) تفاصيل البطولة المنظم الاتحاد الإفريقي لكرة �...

 

グレナダの海戦

グレナダの海戦Battle of Grenadaアメリカ独立戦争中グレナダの海戦、ジャン＝フランソワ・ヒュー画時1779年7月6日場所グレナダ沖（イギリス領西インド諸島）結果 フランス軍の勝利[1]衝突した勢力  フランス王国  グレートブリテン王国指揮官 デスタン伯爵 ジョン・バイロン戦力 戦列艦: 25艦総砲門数: 1,468 門 戦列艦: 21艦総砲門数: 1,516 門被害者数 戦死: 176 �...