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U (uracil): A nucleotide base and one member of the A-U (adenine-uracil) base pair in RNA. The other base pair in RNA is G-C (guanine-cytosine).
Uracil takes the place in RNA that thymine (T) occupies in DNA.
However, while the other four are found in DNA, Uracil is usually only found in RNA. Uracil (U), thymine (T), and cytosine (C) are pyrimidine derivatives, and guanine (G ...
U (uracil): A nucleotide base and one member of the A-U (adenine-uracil) base pair in RNA. The other base pair in RNA is G-C (guanine-cytosine).
u·ra·cil (y r-s l) n. Abbr. U. A pyrimidine base, C 4 H 4 N 2 O 2, that is an essential constituent of RNA. [ur(ea) + ac(etic) + -il, substance relating to.]
–noun Biochemistry . a pyrimidine base, C 4 H 4 N 2 O 2 , that is one of the fundamental components of RNA, in which it forms base pairs with adenine. Symbol: U Use ...
U (uracil) U.S. National Library of Medicine (NLM) UA; UAA; UAG; UAL; Ubidecarenone; Ubiquinone; Ubiquitin; Ubiquitination; Ubiquitous; UBT; UDP-glucuronosyltransferase