from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A double-ringed, crystalline organic base, C5H4N4, not known to occur naturally, from which is derived the nitrogen bases adenine and guanine, as well as uric acid as a metabolic end product.
  • n. Any of a group of organic compounds structurally related to purine, particularly adenine and guanine, and also caffeine, uric acid, theobromine, and theophylline.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of a class of organic heterocyclic base containing fused pyrimidine and imidazole rings; they are components of nucleic acids

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any of several bases that are derivatives of purine
  • n. a colorless crystalline organic base containing nitrogen; the parent compound of various biologically important substances


from The American Heritage® Dictionary of the English Language, 4th Edition

German Purin : blend of Latin pūrus, clean; see pure, and New Latin ūricus, uric (from Greek ouron, urine) + -in, -in, -ine.


  • They form phosphorus-containing organic substances which, together with a form of phosphoric acid, usually contain purine bodies, pyrimidine bodies and a form of sugar or related substance.

    Nobel Prize in Physiology or Medicine 1910 - Presentation Speech

  • I started reading about Alzheimer's and tried to familiarize myself with the research, and at the same time when I was in the -- I was reading in the medical library one day, and I read this article about something called purine derivatives.

    Eva Vertes looks to the future of medicine

  • Uric acid levels are elevated when injesting too much purine, which is found in red meats, legumes, beer, and vegetables such as asparagus and

    Conservapedia - Recent changes [en]

  • Furthermore, although Powner and colleagues 'synthetic sequence yields the pyrimidine ribonucleotides, it cannot explain how purine ribonucleotides (which incorporate guanine and adenine) might have formed.

    Convincing Evidence for God

  • In 1902 Emil Fischer, then in Berlin, was given the prize for "his work on sugar and purine syntheses".

    The Nobel Prize in Chemistry: The Development of Modern Chemistry

  • She thought she would add various chemical side chains to each of the six carbon atoms, producing dozens of new variants of purine.

    The Emperor of All Maladies

  • Q2: Do you know about “healthy beers”, which have healthy features such as low sugar, low calorie or low purine?

    Mmmmm, foreign beer

  • More specifically, purine compounds and their derivatives were used to inhibit the growth of such cells by blocking the synthesis of certain nucleic acids.

    Gertrude Elion.

  • Superpositions of dipole states of base pairs consisting of purine (A, G) and pyrimidine (C, T) ring structures play the role of qubits, and quantum communication (coherence, entanglement, non-locality) occur in the "pi stack" region of the DNA molecule.

    A Third Choice (ID Hypothesis)

  • Now there is new genre fourth sector beers, which seem to be going back to being based on the traditional barley, but with lower sugar, carbohydrates, purine, and taste content.



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  • What are the purine bases of this acid?

    May 29, 2008