Pyrimidine (C4H4N2; /pɪˈrɪ.mɪˌdiːn, paɪˈrɪ.mɪˌdiːn/) is an aromatic, heterocyclic, organic compound similar to pyridine (C5H5N). One of the three diazines...
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Pyrimidine dimers represent molecular lesions originating from thymine or cytosine bases within DNA, resulting from photochemical reactions. These lesions...
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The purine bases adenine and guanine and pyrimidine base cytosine occur in both DNA and RNA, while the pyrimidine bases thymine (in DNA) and uracil (in RNA)...
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Pyrimidine biosynthesis occurs both in the body and through organic synthesis. De Novo biosynthesis of a pyrimidine is catalyzed by three gene products...
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of cytosine, uracil, and thymine is derived of pyrimidine, so those three bases are called the pyrimidine bases. Each of the base pairs in a typical double-helix...
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Pyrimidine analogues are antimetabolites which mimic the structure of metabolic pyrimidines. Nucleobase analogues Fluorouracil (5FU), which inhibits thymidylate...
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Uracil (redirect from 2-oxy-4-oxy pyrimidine)
demethylated form of thymine. Uracil is a common and naturally occurring pyrimidine derivative. The name "uracil" was coined in 1885 by the German chemist...
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In enzymology, a pyrimidine-nucleoside phosphorylase (EC 2.4.2.2) is an enzyme that catalyzes the chemical reaction a pyrimidine nucleoside + phosphate...
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RNA, along with adenine, guanine, and thymine (uracil in RNA). It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached...
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Nucleic acid metabolism (category Pyrimidines)
nitrogenous base. The bases found in nucleic acids are either purines or pyrimidines. In the more complex multicellular animals, they are both primarily produced...
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In enzymology, a pyrimidine-5'-nucleotide nucleosidase (EC 3.2.2.10) is an enzyme that catalyzes the chemical reaction a pyrimidine 5'-nucleotide + H2O...
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a heterocyclic aromatic organic compound that consists of two rings (pyrimidine and imidazole) fused together. It is water-soluble. Purine also gives...
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Pyrimidine phosphorylase may refer to: Thymidine phosphorylase Uridine phosphorylase This article includes a list of related items that share the same...
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Photolyase (redirect from Deoxyribocyclobutadipyrimidine pyrimidine-lyase)
is called photoreactivation. They mainly convert pyrimidine dimers into a normal pair of pyrimidine bases. Photo reactivation, the first DNA repair mechanism...
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Ribosylpyrimidine nucleosidase (redirect from Pyrimidine-nucleoside ribohydrolase)
pyrimidine nucleoside + H2O ⇌ {\displaystyle \rightleftharpoons } D-ribose + a pyrimidine base Thus, the two substrates of this enzyme are pyrimidine...
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Nucleoside deoxyribosyltransferase (redirect from Nucleoside:purine(pyrimidine) deoxy-D-ribosyltransferase)
nucleoside:purine(pyrimidine) deoxy-D-ribosyltransferase. Other names in common use include purine(pyrimidine) nucleoside:purine(pyrimidine) deoxyribosyl...
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Deoxyribonuclease (pyrimidine dimer) (EC 3.1.25.1, endodeoxyribonuclease (pyrimidine dimer), bacteriophage T4 endodeoxyribonuclease V, T4 endonuclease...
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Orotic aciduria (redirect from Orotic aciduria purines-pyrimidines)
decreased ability to synthesize pyrimidines. It was the first described enzyme deficiency of the de novo pyrimidine synthesis pathway. Orotic aciduria...
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Pyrimidine oxygenase (EC 1.14.99.46, RutA) is an enzyme with systematic name uracil,FMNH2:oxygen oxidoreductase (uracil hydroxylating, ring-opening). This...
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linked through a glycosidic bond to the N9 of a purine or the N1 of a pyrimidine. Nucleotides are the molecular building blocks of DNA and RNA. This list...
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adenine, guanine, and cytosine. Thymine is also known as 5-methyluracil, a pyrimidine nucleobase. In RNA, thymine is replaced by the nucleobase uracil. Thymine...
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orotidine-5'-monophosphate (OMP). A distinguishing characteristic of pyrimidine synthesis is that the pyrimidine ring is fully synthesized before being attached to the...
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(OPRTase) or orotic acid phosphoribosyltransferase is an enzyme involved in pyrimidine biosynthesis. It catalyzes the formation of orotidine 5'-monophosphate...
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governed by physico-chemical processes. RNA is composed of purine and pyrimidine nucleotides, both of which are necessary for reliable information transfer...
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endonucleosidase (EC 3.2.2.17, pyrimidine dimer DNA-glycosylase, endonuclease V, deoxyribonucleate pyrimidine dimer glycosidase, pyrimidine dimer DNA glycosylase...
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Dimerization (chemistry) (section Pyrimidine dimers)
a monomeric structure. Pyrimidine dimers (also known as thymine dimers) are formed by a photochemical reaction from pyrimidine DNA bases when exposed...
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divided into two groups, the single-ringed pyrimidines and the double-ringed purines. In DNA, the pyrimidines are thymine and cytosine; the purines are...
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single-ringed chemical structures called pyrimidines. Purines are complementary only with pyrimidines: pyrimidine–pyrimidine pairings are energetically unfavorable...
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Diazinon (IUPAC name: O,O-Diethyl O-[4-methyl-6-(propan-2-yl)pyrimidin-2-yl] phosphorothioate, INN - Dimpylate), a colorless to dark brown liquid, is a...
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Nucleotide salvage (section Pyrimidines)
to nucleotide salvage in particular, in which nucleotides (purine and pyrimidine) are synthesized from intermediates in their degradative pathway. Nucleotide...
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