胞嘧啶, A nitrogenous base, one member of the base pair G- C (guanine and cytosine)
One of the four types of nitrogenous bases found in DNA, having the single-ring structure of a class known as pyrimidines Cytosine always forms complementary base pairing with a DNA purine base called Guanine Cytosine also occurs in RNA molecules Back to Homepage D d
Organic compound of the pyrimidine family, often called a base, consisting of a single ring, containing both nitrogen and carbon atoms, and an amino group. It occurs in combined form in nucleic acids and several coenzymes. In DNA its complementary base is guanine. It or its corresponding nucleoside or nucleotide may be prepared from DNA by selective techniques of hydrolysis