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  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. Category:Pyrimidines - Wikipedia

    en.wikipedia.org/wiki/Category:Pyrimidines

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  4. Category:Fluoropyrimidines - Wikipedia

    en.wikipedia.org/wiki/Category:Fluoropyrimidines

    Fluoropyrimidines are organic compounds that contain the pyrimidine base structure. Pages in category "Fluoropyrimidines" The following 9 pages are in this category, out of 9 total.

  5. Nucleotide base - Wikipedia

    en.wikipedia.org/wiki/Nucleotide_base

    Similarly, the simple-ring structure of cytosine, uracil, and thymine is derived of pyrimidine, so those three bases are called the pyrimidine bases. [ 6 ] Each of the base pairs in a typical double- helix DNA comprises a purine and a pyrimidine: either an A paired with a T or a C paired with a G.

  6. Deoxyribonucleotide - Wikipedia

    en.wikipedia.org/wiki/Deoxyribonucleotide

    The nitrogenous bases are either purines or pyrimidines, heterocycles whose structures support the specific base-pairing interactions that allow nucleic acids to carry information. The base is always bonded to the 1'-carbon of the deoxyribose, an analog of ribose in which the hydroxyl group of the 2'-carbon is replaced with a hydrogen atom.

  7. 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.

  8. Synthesis of nucleosides - Wikipedia

    en.wikipedia.org/wiki/Synthesis_of_nucleosides

    Synthesis of nucleosides involves the coupling of a nucleophilic, heterocyclic base with an electrophilic sugar. The silyl-Hilbert-Johnson (or Vorbrüggen) reaction, which employs silylated heterocyclic bases and electrophilic sugar derivatives in the presence of a Lewis acid, is the most common method for forming nucleosides in this manner.

  9. Ribosylpyrimidine nucleosidase - Wikipedia

    en.wikipedia.org/wiki/Ribosylpyrimidine_nucleosidase

    In enzymology, a ribosylpyrimidine nucleosidase (EC 3.2.2.8) is an enzyme that catalyzes the chemical reaction. a pyrimidine nucleoside + H 2 O D-ribose + a pyrimidine base. Thus, the two substrates of this enzyme are pyrimidine nucleoside and H 2 O, whereas its two products are D-ribose and pyrimidine base.