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Qu'est-ce (qui) est purine - définition
CHEMICAL COMPOUND
Purines; Purine nucleotides; Purine nucleosides; Traube purine synthesis; 7H-purine; C1=C2C(=NC=N1)N=CN2
![The main purine-derived [[nucleobase]]s.](https://commons.wikimedia.org/wiki/Special:FilePath/Blausen 0323 DNA Purines.png?width=200 "The main purine-derived [[nucleobase]]s.")
purine
['pj??ri:n]
¦ noun Chemistry a colourless crystalline bicyclic compound with basic properties.
?(also purine base) a substituted derivative of this forming one of the two classes of base present in DNA and RNA, including adenine and guanine.
Origin
C19: from Ger. Purin, from L. purus 'pure' + uricum 'uric acid' (which it forms on oxidation) + -ine4.
Purine metabolism
THE CHEMICAL REACTIONS AND PATHWAYS INVOLVING PURINE NUCLEOTIDES
Purine biosynthesis; Purine degradation; Purine synthesis inhibitors; Purine inhibitors; Purine synthesis inhibitor; Adenine pathway
Purine metabolism refers to the metabolic pathways to synthesize and break down purines that are present in many organisms.
Purine nucleoside phosphorylase deficiency
COMBINED T CELL AND B CELL IMMUNODEFICIENCY THAT IS A RARE AUTOSOMAL RECESSIVE METABOLIC DISORDER THAT HAS MATERIAL BASIS IN MUTATION IN THE PNP GENE AND CHARACTERIZED MAINLY BY DECREASED T-CELL FUNCTION
Purine nucleoside phosphorylase deficiency is a rare autosomal recessive metabolic disorder which results in immunodeficiency.
Wikipédia
Purine
Purine is a heterocyclic aromatic organic compound that consists of two rings (pyrimidine and imidazole) fused together. It is water-soluble. Purine also gives its name to the wider class of molecules, purines, which include substituted purines and their tautomers. They are the most widely occurring nitrogen-containing heterocycles in nature.
