purine

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purine

purine type of organic base found in the nucleotides and nucleic acids of plant and animal tissue. The German chemist Emil Fischer did much of the basic work on purines and introduced the term into the chemical literature in the early 20th cent. The two major purines of almost universal distribution in living systems are adenine and guanine .

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purine

A Dictionary of Nursing | 2008 | Â© A Dictionary of Nursing 2008, originally published by Oxford University Press 2008. (Hide copyright information) Copyright

purine (pewr-reen) n. a nitrogenous compound with a two-ring molecular structure. Examples of purines are adenine and guanine, which occur in nucleic acids, and uric acid.

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purine

A Dictionary of Ecology | 2004 | | Â© A Dictionary of Ecology 2004, originally published by Oxford University Press 2004. (Hide copyright information) Copyright

purine A nitrogen base composed of two adjoining ring structures, one of which has five members and the other six. The purine bases in the nucleotides of nucleic acids are adenine and guanine.

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MICHAEL ALLABY. "purine." A Dictionary of Ecology. 2004. Encyclopedia.com. 28 Nov. 2009 <http://www.encyclopedia.com>.

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