pyrimidine

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Related to pyrimidine base: purine base

py·rim·i·dine

 (pī-rĭm′ĭ-dēn′, pĭ-)
n.
1. A single-ringed, crystalline organic base, C4H4N2, that is the parent compound of a large group of biologically important compounds.
2. Any of a group of substituted derivatives of pyrimidine, including the nitrogen bases uracil, cytosine, and thymine, which are components of nucleic acids. Barbiturates and certain other drugs are also pyrimidines.

[Alteration of pyridine.]

pyrimidine

(paɪˈrɪmɪˌdiːn)
n
1. (Elements & Compounds) a liquid or crystalline organic compound with a penetrating odour; 1,3-diazine. It is a weakly basic soluble heterocyclic compound and can be prepared from barbituric acid. Formula: C4H4N2
2. (Elements & Compounds) Also called: pyrimidine base any of a number of similar compounds having a basic structure that is derived from pyrimidine, including cytosine, thymine, and uracil, which are constituents of nucleic acids
[C20: variant of pyridine]

py•rim•i•dine

(paɪˈrɪm ɪˌdin, pɪ-)

n.
1. a heterocyclic compound, C4H4N2, that is the basis of several important biochemical substances.
2. one of several pyrimidine derivatives, esp. the bases cytosine, thymine, and uracil, which are fundamental constituents of nucleic acids.
[1880–85;b. pyridine and imide]

py·rim·i·dine

(pī-rĭm′ĭ-dēn′)
Any of a group of organic compounds having a single ring with alternating carbon and nitrogen atoms. Pyrimidines include the bases cytosine, thymine, and uracil, which are components of nucleic acids.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyrimidine - any of several basic compounds derived from pyrimidine
alkali, base - any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water; "bases include oxides and hydroxides of metals and ammonia"
cytosine, C - a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
T, thymine - a base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine
2.pyrimidine - a heterocyclic organic compound with a penetrating odor
organic compound - any compound of carbon and another element or a radical
Translations
pyrimidine
References in periodicals archive ?
The pyrimidine base thymine is a double ring with a single ring--all nitrogen base pairs that are the same dimension and fit into the double-stranded molecule.
The pyrimidine base cytosine is more difficult to detect (34) however, when immobilized into the poly-aminophenols polymeric matrix an increase in the magnitude of the current is obtained.
This probe had 2 effects: first, a pyrimidine base (IUB-code "Y," 50% C and 50% T) was generated at 2 positions of balanced C/T polymorphisms.
If the radiation damage is sufficient to change or delete a purine or pyrimidine base, a point lesion may occur.
The RNA (ribonucleic acid) adjunct also contains the pyrimidine base uracil in its own set of four bases that compose its polynucleotide chain.
ROS cause cellular dysfunction by lipid peroxidation, oxidation of protein backbone and side chain, breakage of DNA strands and modification of purine and pyrimidine bases.
Specifically, nucleic acids or their constituent purine or pyrimidine bases act as internal microbial markers of microbial protein synthesis [2].
of guanine (8-hydrox-2'-deoxy guanine), single-stranded breaks, and oxidized pyrimidine bases (20,21).