Open a Free Currency Exchange account with us to make your Bank-to-Bank transfers much better value. Call: 0044 1480 458 400 (International) or 01480 458 400 (if inside UK) for the best currency exchange rates. 1  Buy or Sell Canadian Dollars here.
Copyright The Columbia University Press. thymine (thÄ«Â´mÄn), organic base of the pyrimidine family. Thymine was the first pyrimidine to be purified from a natural source, having been isolated from calf thymus and beef spleen in 1893â4. The accepted structure of the thymine molecule was published in 1900; this structure was confirmed when several investigators reported the synthesis of the compound during the period 1901 to 1910.
There are four reasons for this: First, thymine is a methylated analogue of uracil, DNA can be protected from nuclei by methylation. Second, uracil has more base pair affinity to adenine, but it can also pair up with other bases including itself. This can lead to mutations in our genetic material. Third, repair enzymes find it easier to recognize the DNA if it is methylated.