Class of nucleotides with one ring. Pyrimidines . programmes-cadres - acersocome - jonsonien - ultraroyaliste - ferroferrite - ⦠Les bases pyrimidiques sont au nombre de 3 : la cytosine, lâuracile et la thymine. The dimerization reaction can also occur among pyrimidine bases ⦠Pyrimidine dimers are molecular lesions formed from thymine or cytosine bases in DNA via photochemical reactions. traduction pyrimidine base dans le dictionnaire Anglais - Francais de Reverso, voir aussi 'primitive',pyramid',pyramid selling',prim', ⦠At neutral pH, pyrimidines ⦠Biologie. Learn all about basicity of pyrimidine. Les pyrimidines groupent, pour l'azote, un noyau azoté commun à toutes les bases pyrimidiques. Recherche d'information médicale. Meaning of pyrimidine with illustrations and photos. Pyrimidine base definition: any of a number of similar compounds having a basic structure that is derived from... | Meaning, pronunciation, translations and examples Nucléotide Pyrimidique: Pyrimidines ⦠Two pyrimidines, cytosine and thymine, commonly are found in DNA; in RNA, uracil replaces thymine. Base + sugar + phosphate. Le chimiste allemand Hermann ⦠Synthèse des pyrimidines. It is a... | Meaning, pronunciation, translations and examples Meaning of pyrimidine bases as a legal term. Ces molécules interviennent dans plusieurs réactions chimiques de l'organisme. Adenine (A) Purine. Purine and pyrimidine bases which are not degraded are recycled - i.e. The pyrimidine bases are thymine (T) and cytosine (C) in DNA and cytosine (C) and uracil (U) in RNA. pyrimidines. Dans une base purique, la pyrimidine est ⦠Information and translations of pyrimidine in the most comprehensive dictionary definitions resource on the web. 1. en biochimie, composé azoté des bases pyrimidiques. All Free. The pyrimidine bases are thymine (T) and cytosine (C) in DNA and cytosine (C) and uracil (U) in RNA. Definition of pyrimidine bases in the Legal Dictionary - by Free online English dictionary and encyclopedia. Definition of Pyrimidine. pyrimidine est employé comme nom féminin singulier. Sens 1 . pyrimidine - WordReference English dictionary, questions, discussion and forums. Purines. Pyrimidine Definition Pyrimidines are simple aromatic compounds composed of carbon and nitrogen atoms in a six-membered ring.. pyrimidines A class of nitrogenous compounds containing one heterocyclic ring. Get detailed, expert explanations on basicity of pyrimidine that can improve your comprehension and help with homework. Les bases de pryimidine sont composées d'une structure à un seul ⦠This recycling, however, is not sufficient to meet total body requirements and so some de novo synthesis is essential. Définition Base Pyrimidique. Ultraviolet light (UV) induces the formation of covalent linkages between consecutive bases along the nucleotide chain in the vicinity of their carbonâcarbon double bonds. The merging of the support level and resistance level. Quelques mots au hasard. Elle entre notamment ⦠Atoms or groups attached to this ring distinguish pyrimidines, which include cytosine, thymine, uracil, thiamine (vitamin B1), uric ⦠avec . ⦠home / medterms medical dictionary a-z list / pyrimidine definition Medical Definition of Pyrimidine. A third pyrimidine, uracil, takes the place of thymine in RNA. Definition of a nucleoside. A chart pattern depicting the period when the supply and demand of a certain stock are in relative equilibrium, resulting in a narrow trading range. For example, pyrimidine rings are found in thiamine (vitamin B1) and barbituates as well as in nucleotides. Cytosine (C) Pyrimidine. home > pyrimidine Pyrimidine: One of the two classes of bases in DNA and RNA. [3] Two common UV products are cyclobutane pyrimidine ⦠Elles constituent la base de plusieurs coenzymes ou cofacteurs comme la coenzyme A, le NAD+, ou encore le NADP+. Pyrimidine bases may exist in different tautomeric define forms depending on the pH. There are many other nitrogenous bases found in nature, plus the molecules may be found incorporated into other compounds. Two pyrimidines, cytosine and thymine, are the DNA bases which, with two PURINES, form the genetic code. Medical Author: William C. Shiel Jr., MD, FACP, FACR; Reviewed on 12/27/2018. Base + sugar. Les pyrimidines ont un noyau aromatique hexagonal de 4 carbones et 2 azotes. List of pyrimidines. As a result, pyrimidines are planar molecules and are characterized by strong UV absorption generally near 260 nm. Définitions. In a more precise chemical description, pyrimidine dimers form from pairs of thymine bases or pairs of cytosine bases in via photochemical reactions. Définition pyrimidine: La pyrimidine est un composé organique, similaire au benzène, et à la pyridine mais avec deux atomes d'azote qui remplacent le carbone en positions 1 et 3. Pronunciation of pyrimidine and its etymology. Molecules may be found incorporated into other compounds and are characterized by strong UV generally... Reviewed on 12/27/2018 form the genetic code by strong UV absorption generally near 260 nm important families of molecules. Reactions localized on the web molécules interviennent dans plusieurs réactions chimiques de l'organisme de 4 carbones et 2.... The DNA bases which, with two PURINES, form the genetic.. C4H4N2 of penetrating odor, form the genetic code une des bases des acides nucléiques, est une purine pyrimidine! Sein de molécules impliquées dans la transduction d'un signal cellulaire, qui correspond au chemical description pyrimidine... Two pyrimidines, cytosine and thymine, are the DNA bases which not. 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