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Uracil (/ ˈjʊərəsɪl /) (symbol U or Ura) is one of the four nucleotide bases in the nucleic acid RNA. The others are adenine (A), cytosine (C), and guanine (G). In RNA, uracil binds to adenine via two hydrogen bonds. In DNA, the uracil nucleobase is replaced by thymine (T). Uracil is a demethylated form of thymine.
19 Ιαν 2021 · Uracil is a pyrimidine nucleobase with a chemical formula of C 4 H 4 N 2 O 2. Pyrimidine is a heterocyclic aromatic organic compound with a single ring (called a pyrimidine ring) with alternating carbon and nitrogen atoms. Uracil has a molar mass of 112.08676 g/mol and a melting point of 335 °C.
Uracil, a colourless, crystalline organic compound of the pyrimidine family that occurs as a component of ribonucleic acid (RNA), a molecule involved in the transmission of hereditary characteristics. The RNA molecule consists of a sequence of nucleotides, each containing a five-carbon sugar.
6 ημέρες πριν · Uracil (U) is one of the four nucleotide bases in RNA, with the other three being adenine (A), cytosine (C) and guanine (G). In RNA, uracil pairs with adenine. In a DNA molecule, the nucleotide thymine (T) is used in place of uracil.
The structure of uracil consists of a six-membered ring containing two nitrogen atoms, and its chemical formula is C4H4N2O2. Uracil is involved in the regulation of gene expression through its role in mRNA and its participation in RNA splicing.
Unlike DNA, which contains thymine, uracil pairs with adenine during RNA transcription, contributing to the overall stability and functionality of RNA molecules. This unique structure allows uracil to participate in various biological processes, including protein synthesis and gene expression.
Definition. Organic base found in RNA. Uracil pairs with adenine and is denoted by the letter ‘U’. Use in clinical context. The pairing of bases allows RNA to be translated into polypeptides. In RNA uracil takes the place of thymine in DNA. The order of bases in a gene determines the order of amino acids in a protein.
