| 释义 |
Definition of purine in English: purinenoun ˈpjʊəriːnˈpjʊrin mass nounChemistry 1A colourless crystalline compound with basic properties, forming uric acid on oxidation. A bicyclic compound; chemical formula: C₅H₄N₄ Example sentencesExamples - 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.
- All these foods contain high levels of purine, which the body metabolises into uric acid - hence gout.
- Uric acid is a byproduct of the metabolism of purine, a protein found particularly in red meat and offal, game, seafood and alcoholic drinks (particularly beer, lager, port and red wine).
- Conversely, the reaction of purine and pyrimidine nucleobases with alkylating and oxidizing agents generally results in site-specific cleavage.
- Scientists have long known that gout develops when joints become fouled with crystals of uric acid, which is a natural digestion product of purine.
- 1.1count noun A substituted derivative of purine, especially the bases adenine and guanine present in DNA.
Example sentencesExamples - This view was reinforced by the elucidation of Z DNA and Z RNA structures, where the syn purines are mostly guanines.
- 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).
- Two other ways of recoding the data were cited: eliminating third codon positions and recoding nucleotides as purines and pyrimidines.
- In comparison with the deamination of cytosine to uracil, the deamination of DNA purines is a minor reaction.
- The purines adenine and guanine are constituents of DNA.
Origin Late 19th century: from German Purin, from Latin purus 'pure' + uricum 'uric acid' + -ine4. Definition of purine in US English: purinenounˈpyo͝orēnˈpjʊrin Chemistry 1A colorless crystalline compound with basic properties, forming uric acid on oxidation. A bicyclic compound; chemical formula: C₅H₄N₄ Example sentencesExamples - All these foods contain high levels of purine, which the body metabolises into uric acid - hence gout.
- Conversely, the reaction of purine and pyrimidine nucleobases with alkylating and oxidizing agents generally results in site-specific cleavage.
- Scientists have long known that gout develops when joints become fouled with crystals of uric acid, which is a natural digestion product of purine.
- 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.
- Uric acid is a byproduct of the metabolism of purine, a protein found particularly in red meat and offal, game, seafood and alcoholic drinks (particularly beer, lager, port and red wine).
- 1.1 A substituted derivative of purine, especially the bases adenine and guanine present in DNA.
Example sentencesExamples - 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).
- The purines adenine and guanine are constituents of DNA.
- In comparison with the deamination of cytosine to uracil, the deamination of DNA purines is a minor reaction.
- Two other ways of recoding the data were cited: eliminating third codon positions and recoding nucleotides as purines and pyrimidines.
- 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’ + -ine. |