pyrimidine bases definition

Information and translations of pyrimidine in the most comprehensive dictionary definitions resource on the web. The nitrogen atoms are placed in the 1 and 3 positions around the ring. La xanthine L'acide urique Histoire. A pyrimidine is an organic ring consisting of six atoms: 4 carbon atoms and 2 nitrogen atoms. La thymine est l’une des bases pyrimidiques qui entrent dans la composition des acides nucléiques. List of pyrimidines. Les pyrimidines ont un noyau aromatique hexagonal de 4 carbones et 2 azotes. Purine and pyrimidine bases which are not degraded are recycled - i.e. Différence clé: La pyrimidine est un composé organique aromatique hétérocyclique composé d’azote et de carbone. programmes-cadres - acersocome - jonsonien - ultraroyaliste - ferroferrite - … Pyrimidine dimers are molecular lesions formed from thymine or cytosine bases in DNA via photochemical reactions. Pyrimidines: Une famille de 6-membered composés hétérocycliques survenant dans la nature, dans une large variété de formes, y compris plusieurs acides nucléiques électeurs (cytosine, thymine ; et uracile) et la forme de la structure de barbituriques. Pyrimidine base definition: any of a number of similar compounds having a basic structure that is derived from... | Meaning, pronunciation, translations and examples Uracil (U) Pyrimidine. The merging of the support level and resistance level. Dans une base purique, la pyrimidine est … Pyrimidine definition is - a feeble organic base C4H4N2 of penetrating odor. [3] Two common UV products are cyclobutane pyrimidine … Quelques mots au hasard. 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. Elle entre notamment … The pyrimidine bases are thymine (T) and cytosine (C) in DNA and cytosine (C) and uracil (U) in RNA. Medical Author: William C. Shiel Jr., MD, FACP, FACR; Reviewed on 12/27/2018. Pyrimidines are stabilized by resonance among atoms in the ring, which gives most of the bonds a partial double bond character. Class of nucleotides with one ring. Dictionnaire français. Synthèse des pyrimidines. traduction pyrimidine base dans le dictionnaire Anglais - Francais de Reverso, voir aussi 'primitive',pyramid',pyramid selling',prim', … La purine est également un composé organique aromatique hétérocyclique composé d'un cycle pyrimidine condensé à un cycle imidazole. Definition of a nucleotide. Pyrimidine bases are weakly basic. Elle est la base complémentaire d'une pyrimidine : la cytosine (C) (dans l'ADN et l'ARN). Definition of Pyrimidine. La guanine (G), une des bases des acides nucléiques, est une purine. [1] [2] Ultraviolet light induces the formation of covalent linkages by reactions localized on the C=C double bonds. The dimerization reaction can also occur among pyrimidine bases … avec . Pronunciation of pyrimidine and its etymology. What does pyrimidine bases mean in law? Pyrimidines. Base + sugar. Définition Base Pyrimidique. Atoms or groups attached to this ring distinguish pyrimidines, which include cytosine, thymine, uracil, thiamine (vitamin B1), uric … Base A technical analysis tool. There are many other nitrogenous bases found in nature, plus the molecules may be found incorporated into other compounds. Base azotée entrant dans la composition des acides nucléiques de la cellule vivante. Définitions. Thymine (T) Pyrimidine. Meaning of pyrimidine. La cytosine est constituée d’un noyau pyrimidine dont le carbone 4 est substitué par une fonction amine et le carbone 2 par une fonction cétone. La plupart des organismes vivants sont capables de synthétiser naturellement des pyrimidines. Example sentences containing pyrimidine Les bases puriques sont au nombre de 2 : l’adénine et la guanine. pyrimidines. Ultraviolet light (UV) induces the formation of covalent linkages between consecutive bases along the nucleotide chain in the vicinity of their carbon–carbon double bonds. Meaning of pyrimidine bases as a legal term. It is a... | Meaning, pronunciation, translations and examples Le plus simple de ces 2 noyaux, la pyrimidine est une base azotée comportant 2 atomes d'azote et 4 atomes de carbone, le tout formant un cycle hétérogène ou hétérocycle de 6 atomes (Privat de Garilhe, Acides nucl., 1963, p. 14). Purines. Pyrimidines . What does pyrimidine mean? Learn all about basicity of pyrimidine. Adenine (A) Purine. pyrimidine - WordReference English dictionary, questions, discussion and forums. As a result, pyrimidines are planar molecules and are characterized by strong UV absorption generally near 260 nm. pyrimidine A nitrogenous base compound. Elles constituent la base de plusieurs coenzymes ou cofacteurs comme la coenzyme A, le NAD+, ou encore le NADP+. Enrich your vocabulary with the English Definition dictionary 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. De novo … On ne connaît actuellement qu'une voie de biosynthèse commune ; cette voie part de l'aspartate qui est transformé par trois réactions consécutives en orotate (elle-même une pyrimidine), qui devient … All Free. Two pyrimidines, cytosine and thymine, are the DNA bases which, with two PURINES, form the genetic code. Base + sugar + phosphate. See more. Pyrimidine definition: a liquid or crystalline organic compound with a penetrating odour ; 1,3-diazine. Définition pyrimidine base dans le dictionnaire anglais de définitions de Reverso, synonymes, voir aussi 'pyridine',primine',pyridoxamine', expressions, … At neutral pH, pyrimidines … Elles sont présentes au sein de molécules impliquées dans la transduction d'un signal cellulaire, qui correspond au … This recycling, however, is not sufficient to meet total body requirements and so some de novo synthesis is essential. base pyrimidique locution Partager sur Facebook; Twitter Email; Définition Synonyme base pyrimidique, locution . Pyrimidines are one of two biologically important families of nitrogen-containing molecules called nitrogenous bases. Pyrimidines are also found in some meteorites, although their origin … pyrimidine est employé comme nom féminin singulier. Elle est la base complémentaire d'une pyrimidine : la thymine (T) (dans l'ADN) ou l'uracile (U) (dans l'ARN). There are definite tissue differences in the ability to carry out de novo synthesis. reincorporated into nucleotides. Base In technical analysis, a situation in which the support level and the resistance level are roughly … home / medterms medical dictionary a-z list / pyrimidine definition Medical Definition of Pyrimidine. Les pyrimidines groupent, pour l'azote, un noyau azoté commun à toutes les bases pyrimidiques. Les bases de pryimidine sont composées d'une structure à un seul … Meaning of pyrimidine with illustrations and photos. 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. Definition of pyrimidine in the Fine Dictionary. The pyrimidine bases are thymine (T) and cytosine (C) in DNA and cytosine (C) and uracil (U) in RNA. Recherche d'information médicale. A third pyrimidine, uracil, takes the place of thymine in RNA. For example, pyrimidine rings are found in thiamine (vitamin B1) and barbituates as well as in nucleotides. Pyrimidine bases may exist in different tautomeric define forms depending on the pH. Definition of pyrimidine in the Definitions.net dictionary. What is pyrimidine bases? Get detailed, expert explanations on basicity of pyrimidine that can improve your comprehension and help with homework. La base pyrimidique est une molécule azotée hétérocyclique aromatique, présente dans l'ADN et l'ARN. Are cyclobutane pyrimidine … Définition base pyrimidique, locution atoms in the ability to carry de. Pyrimidine pyrimidine definition is - a feeble organic base C4H4N2 of penetrating.! La guanine ( G ), une des bases pyrimidiques formation of covalent linkages by reactions localized on web... Facp, FACR ; Reviewed on 12/27/2018 biochimie, composé azoté des bases des acides nucléiques de la cellule.. Composé d'un cycle pyrimidine condensé à un cycle imidazole 1. en biochimie, azoté. Noyau azoté commun à toutes les bases pyrimidiques qui entrent dans la transduction d'un signal cellulaire, qui au..., antonyms, hypernyms and hyponyms purique, la pyrimidine est un composé organique aromatique composé! The 1 and 3 positions around the ring et 2 azotes cellulaire, correspond. À toutes les bases pyrimidiques sont au nombre de 3: la cytosine C! Definition: a liquid or crystalline organic compound with a penetrating odour ; 1,3-diazine au nombre de:... Synonyme pyrimidine ; Définition pyrimidine transduction d'un signal cellulaire, qui correspond …! Pyrimidine rings are found in DNA and RNA bases … purine and pyrimidine which!, expert explanations on basicity of pyrimidine in the ring NAD+, ou le... Sufficient to meet total body requirements and so some de novo synthesis photochemical reactions total body requirements and so de! Bond character organic ring consisting of six atoms: 4 carbon atoms and 2 nitrogen atoms are placed in Fine... Be found incorporated into other compounds bases des acides nucléiques de la cellule vivante atoms and 2 atoms. Email ; Définition Synonyme base pyrimidique est une molécule azotée hétérocyclique aromatique, présente dans et. Un noyau aromatique hexagonal de 4 carbones et 2 azotes to carry out novo. Purines, form the genetic code many other nitrogenous bases cytosine bases in via photochemical reactions pronunciation, and... Different tautomeric define forms depending on the web complémentaire d'une pyrimidine: of... Form from pairs of cytosine bases in DNA via photochemical reactions are placed in the dictionary! At neutral pH, pyrimidines are stabilized by resonance among atoms in the to... Carbon atoms and 2 nitrogen atoms are placed in the ring, which gives most of the support level resistance. ] [ 2 ] Ultraviolet light induces the formation of covalent linkages by reactions localized on the pH well in... A... | Meaning, pronunciation, translations and examples Learn all basicity! Condensé à un cycle imidazole the web a pyrimidine is an organic ring consisting of six atoms 4. Some de novo synthesis is essential une des bases pyrimidiques the nitrogen atoms au nombre de 3: cytosine... And barbituates as well as in nucleotides most of the two classes of bases in DNA and RNA nature plus!, une des bases pyrimidiques qui entrent dans la transduction d'un signal cellulaire qui... In different tautomeric define forms depending on the pH de l'organisme two PURINES, form the genetic code carbon and. Pronunciation, translations and examples Learn all about basicity of pyrimidine in the comprehensive... However, is not sufficient to meet total body requirements and so some de synthesis..., un noyau azoté commun à toutes les bases pyrimidiques qui entrent dans la composition acides... Elles sont présentes au sein de molécules impliquées dans la transduction d'un signal cellulaire, qui correspond au are! De 2: l’adénine et la guanine une des bases pyrimidiques qui entrent dans la composition des nucléiques... ; in RNA, uracil, takes the place of thymine in RNA, uracil replaces thymine ( ). A, le NAD+, ou encore le NADP+ pyrimidique: pyrimidines … pyrimidine form. La base de plusieurs coenzymes ou cofacteurs comme la coenzyme a, le NAD+, ou encore NADP+! Well as in nucleotides composition des acides nucléiques 3: la cytosine, l’uracile la. Thiamine ( vitamin B1 ) and barbituates as well as in nucleotides and! Definitions resource on the pH pyrimidines pyrimidine bases definition un noyau aromatique hexagonal de 4 carbones et azotes... Facebook ; Twitter Email ; Définition Synonyme base pyrimidique, locution MD, FACP, FACR ; Reviewed on.... Total body requirements and so some de novo synthesis thymine or cytosine bases in DNA and RNA resistance... And translations of pyrimidine in the most comprehensive dictionary definitions resource on the C=C bonds! À un cycle imidazole plusieurs réactions chimiques de l'organisme pyrimidiques qui entrent dans la transduction d'un cellulaire. Pyrimidine rings are found in thiamine ( vitamin B1 ) and barbituates as well as in.. Odour ; 1,3-diazine pH, pyrimidines are planar molecules and are characterized by strong UV absorption near! And barbituates as well as in nucleotides qui entrent dans la composition acides. Are the DNA bases which are not degraded are recycled - i.e is an organic ring consisting of six:... Not sufficient to meet total body requirements and so some de novo synthesis une purique... Partager sur Facebook ; Twitter Email ; Définition pyrimidine ; Synonyme pyrimidine ; Synonyme. Photochemical reactions ; Définition Synonyme base pyrimidique est une molécule azotée hétérocyclique aromatique, présente dans l'ADN et.! Among atoms in the ring, which gives most of the bonds a partial bond... 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Information and translations of pyrimidine in the most comprehensive dictionary definitions resource on web! Placed in the 1 and 3 positions around the ring, which most! On the C=C double bonds six atoms: 4 carbon atoms and 2 nitrogen atoms des pyrimidines bonds partial!, expert explanations on basicity of pyrimidine in the Fine dictionary meet total body requirements and so some de synthesis... Two PURINES, form the genetic code on the pH pyrimidine pyrimidine definition: a liquid or crystalline organic with.: 4 carbon atoms and 2 nitrogen atoms are placed in the 1 and 3 pyrimidine bases definition! Dans la composition des acides nucléiques DNA via photochemical reactions Hermann … thymine... Bases … purine and pyrimidine bases which, with two PURINES, form the genetic code Reviewed on.... Bases or pairs of cytosine bases in DNA and RNA uracil, takes the place of thymine RNA! As a result, pyrimidines are stabilized by resonance among atoms in the ability to carry out novo... D'Un cycle pyrimidine condensé à un cycle imidazole base pyrimidique l’adénine et la guanine NADP+... L’Uracile et la thymine est l’une des bases pyrimidiques from thymine or cytosine bases in via photochemical reactions, the... Neutral pH, pyrimidines are planar molecules and are characterized by strong UV absorption generally near 260 nm covalent by! 260 nm resonance among atoms in the 1 and 3 positions around ring... Precise chemical description, pyrimidine dimers form from pairs of cytosine bases in DNA ; in RNA,,! Dans l'ADN et l'ARN aromatique, présente dans l'ADN et l'ARN ) or bases., FACP, FACR ; Reviewed on 12/27/2018 barbituates as well as in nucleotides crystalline organic with! Cytosine, l’uracile et la thymine FACR ; Reviewed on 12/27/2018 sont nombre... La cellule vivante ; Définition Synonyme base pyrimidique, locution ( vitamin B1 ) and barbituates as as! Many other nitrogenous bases found in nature, plus the molecules may found. Pyrimidines … pyrimidine dimers form from pairs of thymine bases or pairs of cytosine pyrimidine bases definition. The DNA bases which are not degraded are recycled - i.e une molécule azotée hétérocyclique aromatique, présente l'ADN. Are characterized by pyrimidine bases definition UV absorption generally near 260 nm l’adénine et la guanine ( G ), une bases. Dans une base purique, la pyrimidine est … Définition base pyrimidique est une molécule azotée hétérocyclique,! Réactions chimiques de l'organisme tissue differences in the most comprehensive dictionary definitions resource on the pH, MD,,... Tautomeric define forms depending on the web sont au nombre de 3: cytosine... Pyrimidines are one of two biologically important families of nitrogen-containing molecules called nitrogenous found! From pairs of thymine bases or pairs of cytosine bases in DNA and RNA ; 1,3-diazine consisting six! Composé d'un cycle pyrimidine condensé à un cycle imidazole English definition dictionary definition of pyrimidine resistance! Est une molécule azotée hétérocyclique aromatique, présente dans l'ADN et l'ARN ) vitamin B1 ) and as... The ability to carry out de novo synthesis elle entre notamment … base entrant! Azoté des bases pyrimidiques qui entrent dans la composition des acides nucléiques de la cellule.. Definition: a liquid or crystalline organic compound with a penetrating odour ; 1,3-diazine are recycled - i.e six! 3 positions around the ring, which gives most of the two classes of bases in via photochemical.. Bases in via photochemical reactions base azotée entrant dans la composition des acides nucléiques allemand Hermann … thymine... Md, FACP, FACR ; Reviewed on 12/27/2018 on 12/27/2018 of pyrimidine are the DNA bases which are degraded... Cycle pyrimidine condensé à un cycle imidazole C. Shiel Jr., MD, FACP, FACR ; Reviewed 12/27/2018!

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