Definition of purine in English:

purine

noun 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. 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:

purine

nounˈpyo͝orēnˈpjʊrin

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. 1.1 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.

单词	purine
释义	Definition of purine in English: purine noun 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: purine nounˈpyo͝orēnˈpjʊrin 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.
随便看	come to rest come to sb's assistance come to sb's knowledge come to see come to somebody's assistance come to somebody's knowledge come to someone's aid come to someone's assistance come to someone's assistance come to someone's knowledge come to someone's knowledge come to someone's rescue come to stay come to terms come to terms about come to terms on come to terms with come to terms with come to that come to that (or if it comes to that) come to that (or if it comes to that) come to the aid of come to the conclusion come to the conclusion that come to the crunch