enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Pyrimidine - Wikipedia

    en.wikipedia.org/wiki/Pyrimidine

    Pyrimidine (C 4 H 4 N 2; / p ɪ ˈ r ɪ. m ɪ ˌ d iː n, p aɪ ˈ r ɪ. m ɪ ˌ d iː n /) is an aromatic, heterocyclic, organic compound similar to pyridine (C 5 H 5 N). [3] One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has nitrogen atoms at positions 1 and 3 in the ring.

  3. Pyrimidine metabolism - Wikipedia

    en.wikipedia.org/wiki/Pyrimidine_metabolism

    RNA is composed of pyrimidine and purine nucleotides, both of which are necessary for reliable information transfer, and thus natural selection and Darwinian evolution. Becker et al. showed how pyrimidine nucleosides can be synthesized from small molecules and ribose, driven solely by wet-dry cycles. [11]

  4. Pyrimidine dimer - Wikipedia

    en.wikipedia.org/wiki/Pyrimidine_dimer

    Pyrimidine dimers encompass several types, each with distinct structures and implications for DNA integrity. [ citation needed ] Cyclobutane pyrimidine dimer (CPD) is a dimer which features a four-membered ring formed by the fusion of two double-bonded carbons from adjacent pyrimidines.

  5. Purine - Wikipedia

    en.wikipedia.org/wiki/Purine

    Purine is a heterocyclic aromatic organic compound that consists of two rings (pyrimidine and imidazole) fused together.It is water-soluble.Purine also gives its name to the wider class of molecules, purines, which include substituted purines and their tautomers.

  6. Category:Pyrimidines - Wikipedia

    en.wikipedia.org/wiki/Category:Pyrimidines

    Pyrimidines are organic compounds that contain the pyrimidine base structure. Subcategories. This category has the following 9 subcategories, out of 9 total. A.

  7. Pyrimidinedione - Wikipedia

    en.wikipedia.org/wiki/Pyrimidinedione

    Pyrimidine. Pyrimidinediones are a class of chemical compounds characterized by a pyrimidine ring substituted with two carbonyl groups. Examples include naturally ...

  8. Fluoropyrimidine - Wikipedia

    en.wikipedia.org/wiki/Fluoropyrimidine

    Left: The structure of pyrimidine with the locants for ring atoms marked. Right : 5-Fluorouracil , a fluoropyrimidine formally named as 5-fluoro-1 H ,3 H -pyrimidine-2,4-dione Fluoropyrimidines are a general class organic compounds in which the substituent (s) around a pyrimidine ring include at least one fluorine atom.

  9. Pyrimidine-5'-nucleotide nucleosidase - Wikipedia

    en.wikipedia.org/wiki/Pyrimidine-5'-nucleotide...

    In enzymology, a pyrimidine-5'-nucleotide nucleosidase (EC 3.2.2.10) is an enzyme that catalyzes the chemical reaction a pyrimidine 5'-nucleotide + H 2 O ⇌ {\displaystyle \rightleftharpoons } D-ribose 5-phosphate + a pyrimidine base