Thymine (T) is one of four chemical bases in DNA, the other three being adenine (A), cytosine (C), and guanine (G). Within the DNA molecule, thymine bases located on one strand form chemical bonds with adenine bases on the opposite strand. The sequence of four DNA bases encodes the cell's genetic instructions.
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Thymine is one of the building blocks of DNA. It's one of the four nucleotides that are strung together to make the long sequence that you find in DNA, of C, A, Gs, and Ts. It's the T of the C, A, Gs, and Ts. And in the double helix, thymine pairs with adenine, or the A nucleotide.
Lawrence C. Brody, Ph.D.
Chief & Senior Investigator, Genome Technology Branch; Head, Molecular Pathogenesis Section
Dr. Brody investigates the genetics of breast cancer and neural tube defects. As chief of the NHGRI Genome Technology Branch's Molecular Pathogenesis section, he is interested in studying genetic mutations that lead to perturbations in normal metabolic pathways and cause disorders such as cancer and birth defects. His laboratory investigates mutations in two breast cancer-linked genes, breast cancer gene 1 (BRCA1) and breast cancer gene 2 (BRCA2). Dr. Brody's laboratory was among the first to report that women carrying BRCA1 or BRCA2 mutations have a higher risk of developing both breast and ovarian cancer than women without such mutations.