nucleotide(redirected from Thionucleotides)
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Any of a group of compounds consisting of a nucleoside combined with a phosphate group and constituting the units that make up DNA and RNA molecules.
[Alteration of nucleoside.]
(Biochemistry) biochem a compound consisting of a nucleoside linked to phosphoric acid. Nucleic acids are made up of long chains (polynucleotides) of such compounds
[C20: from nucleo- + t (added for ease of pronunciation) + -ide]
nu•cle•o•tide(ˈnu kli əˌtaɪd, ˈnyu-)
any of a group of molecules that, when linked together, form the building blocks of DNA or RNA: in DNA the group comprises a phosphate group, the bases adenine, cytosine, guanine, and thymine, and a pentose sugar; in RNA the thymine base is replaced by uracil.
[< German Nucleotid (1908)]
Any of a group of organic compounds composed of one of several nitrogen bases linked to a sugar and a phosphate group. The nucleic acids DNA and RNA are made up of chains of nucleotides. See Note at DNA.
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|Noun||1.||nucleotide - a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA)|
base pair - one of the pairs of chemical bases joined by hydrogen bonds that connect the complementary strands of a DNA molecule or of an RNA molecule that has two strands; the base pairs are adenine with thymine and guanine with cytosine in DNA and adenine with uracil and guanine with cytosine in RNA
adenosine monophosphate, adenylic acid, AMP - a nucleotide found in muscle cells and important in metabolism; reversibly convertible to ADP and ATP
adenosine triphosphate, ATP - a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions
deoxyadenosine monophosphate, A - one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
deoxycytidine monophosphate, C - one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
deoxyguanosine monophosphate, G - one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
deoxythymidine monophosphate, T - one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
ester - formed by reaction between an acid and an alcohol with elimination of water
muton - the smallest unit of DNA where a mutation can occur