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Что (кто) такое pyrimidin - определение
CHEMICAL COMPOUND
Pyrimidines; Pyramidine; Pyrimidine nucleotides; Pyrimidine nucleosides; Pyrimidyl; Pyrimidin; Tetrahydropyrimidine; Pyrimidine nucleoside; Pyrimidine-nucleoside; Meta-diazine
![The pyrimidine nitrogen bases found in [[DNA]] and [[RNA]].](https://commons.wikimedia.org/wiki/Special:FilePath/Blausen 0324 DNA Pyrimidines.png?width=200 "The pyrimidine nitrogen bases found in [[DNA]] and [[RNA]].")
pyrimidine
[p?'r?m?di:n]
¦ noun Chemistry a colourless crystalline heterocyclic compound with basic properties.
?(also pyrimidine base) a substituted derivative of this forming one of the two classes of base present in DNA and RNA, including cytosine, thymine, and uracil.
Origin
2,5-diamino-6-(ribosylamino)-4(3H)-pyrimidinone 5'-phosphate reductase
CLASS OF ENZYMES
EC 1.1.1.302; 2,5-diamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one:NAD(P)+ oxidoreductase
2,5-diamino-6-(ribosylamino)-4(3H)-pyrimidinone 5'-phosphate reductase (, 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate reductase, MjaRED, MJ0671 (gene)) is an enzyme with systematic name 2,5-diamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one:NAD(P)+ oxidoreductase. This enzyme catalyses the following chemical reaction
DDC
Display Data Channel (Reference: VESA)
Википедия
Pyrimidine
Pyrimidine (C4H4N2; ) is an aromatic, heterocyclic, organic compound similar to pyridine (C5H5N). One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has nitrogen atoms at positions 1 and 3 in the ring.: 250 The other diazines are pyrazine (nitrogen atoms at the 1 and 4 positions) and pyridazine (nitrogen atoms at the 1 and 2 positions).
In nucleic acids, three types of nucleobases are pyrimidine derivatives: cytosine (C), thymine (T), and uracil (U).
