英语词汇“purine”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

purine

/ˈpjʊəriːn

noun [mass noun] Chemistry

1A colourless crystalline compound with basic properties, forming uric acid on oxidation.

A bicyclic compound; chemical formula: C₅H₄N₄.

The major enzymological studies underway in the field of biochemistry prior to 1950 unfortunately were focused on carbon metabolism, not on amino acid, vitamin, purine, or pyrimidine biosynthesis....

Scientists have long known that gout develops when joints become fouled with crystals of uric acid, which is a natural digestion product of purine.
Conversely, the reaction of purine and pyrimidine nucleobases with alkylating and oxidizing agents generally results in site-specific cleavage.

1.1 (also purine base) [count noun] A substituted derivative of purine, especially the bases adenine and guanine present in DNA.The purines adenine and guanine are constituents of DNA....

Indeed, all the genes encoding enzymes required for de novo AMP biosynthesis are repressed at the transcriptional level by the presence of extracellular purines (adenine or hypoxanthine).
This view was reinforced by the elucidation of Z DNA and Z RNA structures, where the syn purines are mostly guanines.

Origin

Late 19th century: from German Purin, from Latin purus 'pure' + uricum 'uric acid' + -ine⁴.

单词	purine
释义	purine /ˈpjʊəriːn / noun [mass noun] Chemistry 1A colourless crystalline compound with basic properties, forming uric acid on oxidation. A bicyclic compound; chemical formula: C₅H₄N₄. The major enzymological studies underway in the field of biochemistry prior to 1950 unfortunately were focused on carbon metabolism, not on amino acid, vitamin, purine, or pyrimidine biosynthesis.... Scientists have long known that gout develops when joints become fouled with crystals of uric acid, which is a natural digestion product of purine. Conversely, the reaction of purine and pyrimidine nucleobases with alkylating and oxidizing agents generally results in site-specific cleavage. 1.1 (also purine base) [count noun] A substituted derivative of purine, especially the bases adenine and guanine present in DNA.The purines adenine and guanine are constituents of DNA.... Indeed, all the genes encoding enzymes required for de novo AMP biosynthesis are repressed at the transcriptional level by the presence of extracellular purines (adenine or hypoxanthine). This view was reinforced by the elucidation of Z DNA and Z RNA structures, where the syn purines are mostly guanines. Origin Late 19th century: from German Purin, from Latin purus 'pure' + uricum 'uric acid' + -ine⁴.
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