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pyrimidine

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Definition of pyrimidine - NCI Dictionary of Cancer Terms
(py-RIH-mih-deen) One of two chemical compounds that cells use to make the building blocks of DNA and RNA . Examples of pyrimidines are cytosine, thymine, and uracil. Cytosine and thymine are used to make DNA and cytosine and uracil are used to make RNA. www.cancer.gov
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Pyrimidine - Wikipedia
Pyrimidine is an aromatic, heterocyclic, organic compound similar to pyridine ( C 5H 5N). One of the three diazines (six-membered heterocyclics with two ... en.wikipedia.org
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Pyrimidine | C4H4N2 | CID 9260 - PubChem
Pyrimidine is the parent compound of the pyrimidines; a diazine having the two nitrogens at the 1- and 3-positions. It has a role as a Daphnia magna metabolite. pubchem.ncbi.nlm.nih.gov
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pyrimidine
pyrimidine Chem. (pɪˈrɪmɪdiːn, paɪər-) Also † -in. [ad. G. pyrimidin (A. Pinner 1885, in Ber. d. Deut. Chem. Ges. XVIII. 760) f. pyridin pyridine with inserted -im (f. imid imide).] A colourless, crystalline basic solid, CH:N·CH:N·CH:CH ; any substituted derivative containing this ring structure, sp... Oxford English Dictionary
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Pyrimidine - an overview | ScienceDirect Topics
Pyrimidine is a heterocyclic six-membered aromatic ring similar to benzene and pyridine containing two nitrogen atoms at positions 1 and 3. www.sciencedirect.com
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PYRIMIDINE Definition & Meaning - Merriam-Webster
1. a feeble organic base C 4 H 4 N 2 of penetrating odor 2. a derivative of pyrimidine; especially : a base (such as cytosine, thymine, or uracil) that is a ... www.merriam-webster.com
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Pyrimidine phosphorylase
Pyrimidine phosphorylase may refer to: Thymidine phosphorylase Uridine phosphorylase wikipedia.org
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Pyrimidine | Nucleobases, DNA, RNA - Britannica
Pyrimidine, any of a class of organic compounds of the heterocyclic series characterized by a ring structure composed of four carbon atoms and two nitrogen ... www.britannica.com
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Metabolism | Nucleotide Synthesis | Purine and ... - YouTube
... pyrimidine synthesis that will ultimately be the chemical groundwork for building RNA and DNA! We hope you enjoy this lecture and be sure to ... www.youtube.com
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Pyrimidines | DrugBank Online
A second-generation antipsychotic medication used to treat a number of mental health disorders including schizophrenia, bipolar mania, psychosis, or as an ... go.drugbank.com
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What is the Difference Between Purines and Pyrimidines? - Albert.io
Purines and pyrimidines are the two families of nitrogenous bases that make up nucleic acids – in other words, they are the building blocks of DNA and RNA. www.albert.io
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Pyrimidine dimer
Pyrimidine dimers are the primary cause of melanomas in humans. A 6–4 photoproduct (6–4 pyrimidine–pyrimidone or 6–4 pyrimidine–pyrimidinone) is an alternate dimer consisting of a single covalent bond between the carbon wikipedia.org
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Pyrimidine analogue
Pyrimidine analogues are antimetabolites which mimic the structure of metabolic pyrimidines. synthase Floxuridine (FUDR) 6-azauracil (6-AU) Nucleoside analogues Cytarabine (Cytosine arabinoside) Gemcitabine Nucleotide analogues Medical uses Pyrimidine wikipedia.org
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Deoxyribonuclease (pyrimidine dimer)
Deoxyribonuclease (pyrimidine dimer) (, endodeoxyribonuclease (pyrimidine dimer), bacteriophage T4 endodeoxyribonuclease V, T4 endonuclease V) is an enzyme This enzyme catalyses the following chemical reaction: Endonucleolytic cleavage near pyrimidine dimers to products with 5'-phosphate This enzyme acts wikipedia.org
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How can a three-base codon evolve from a two-base codon? Inspired by this question among others. It's widely suggested that the current 3-base codon system of encoding protein sequences in DNA evolved from an earlier...
Its also likely that between 2 and 3 base codes a 2 base pyrimidine/purine system was used. Today the third base can often be switched for its pyrimidine/purine pair without changing the resulting amino acid.
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