单词	thymine
释义	thymine /ˈθʌɪmiːn / noun [mass noun] Biochemistry A compound which is one of the four constituent bases of nucleic acids. A pyrimidine derivative, it is paired with adenine in double-stranded DNA. Alternative name; 5-methyluracil; chemical formula: C5H6N2O2. The derivatives of purine are called adenine and guanine, and the derivatives of pyrimidine are called thymine, cytosine and uracil.... Of the four bases that make up DNA - adenine, thymine, cytosine and guanine - only cytosine has the potential to be methylated in humans and most mammals. In DNA the bases pair to form a ladder-like structure, with adenine paired with thymine and guanine with cytosine. Origin Late 19th century: from thymus + -ine4.
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