| 释义 |
Definition of pyrimidine in English: pyrimidinenoun pɪˈrɪmɪdiːn mass nounChemistry 1A colourless crystalline compound with basic properties. A heteroaromatic compound; chemical formula: C₄H₄N₂ Example sentencesExamples - Second, there is no branch in the pyrimidine synthesis pathway.
- The purine and pyrimidine bases in cells are linked to carbohydrate and in this form are termed, nucleosides.
- The URA3 gene is essential for yeast pyrimidine biosynthesis.
- The transcription of the operon is coordinately repressed in the presence of excess pyrimidine nucleotides.
- Our analyses also suggest that the utilization of products of de novo pyrimidine biosynthesis may differ between different cell types.
- 1.1count noun A substituted derivative of pyrimidine, especially the bases thymine and cytosine present in DNA.
Example sentencesExamples - Purines and pyrimidines are considered as complex molecules themselves because they are never synthesized as such in vivo.
- Both purine and pyrimidine bases present similar PI yields at 266 nm.
- Both of these products involve dimerization of adjacent pyrimidines on the same DNA strand.
- Some introns also have a sequence rich in pyrimidines that adds up to 10 additional bases at the 3’ end.
Origin Late 19th century: from German Pyrimidin, from pyridine, with the insertion of -im- from imide. Definition of pyrimidine in US English: pyrimidinenoun Chemistry 1A colorless crystalline compound with basic properties. A heteroaromatic compound; chemical formula: C₄H₄N₂ Example sentencesExamples - The URA3 gene is essential for yeast pyrimidine biosynthesis.
- The transcription of the operon is coordinately repressed in the presence of excess pyrimidine nucleotides.
- Our analyses also suggest that the utilization of products of de novo pyrimidine biosynthesis may differ between different cell types.
- Second, there is no branch in the pyrimidine synthesis pathway.
- The purine and pyrimidine bases in cells are linked to carbohydrate and in this form are termed, nucleosides.
- 1.1 A substituted derivative of pyrimidine, especially the bases thymine and cytosine present in DNA.
Example sentencesExamples - Some introns also have a sequence rich in pyrimidines that adds up to 10 additional bases at the 3’ end.
- Both of these products involve dimerization of adjacent pyrimidines on the same DNA strand.
- Purines and pyrimidines are considered as complex molecules themselves because they are never synthesized as such in vivo.
- Both purine and pyrimidine bases present similar PI yields at 266 nm.
Origin Late 19th century: from German Pyrimidin, from pyridine, with the insertion of -im- from imide. |