Biochemistry

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pyrimidine

A Dictionary of Zoology | 1999 | | Copyright

pyrimidine A basic, six-membered, heterocyclic compound; the principal pyrimidines (uracil, thymine, and cytosine) are important constituents of nucleic acids. Thiamine (vitamin B₁) is an important pyrimidine derivative, and other derivatives play major roles in carbohydrate and lipid metabolism.

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MICHAEL ALLABY. "pyrimidine." A Dictionary of Zoology. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "pyrimidine." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O8-pyrimidine.html

MICHAEL ALLABY. "pyrimidine." A Dictionary of Zoology. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-pyrimidine.html

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pyrimidine

A Dictionary of Plant Sciences | 1998 | | Copyright

pyrimidine A basic, 6-membered heterocyclic compound. The principal pyrimidines (uracil, thymine, and cytosine) are important constituents of nucleic acids. Thiamine (vitamin B₁) is an important pyrimidine derivative, and other derivatives play major roles in carbohydrate and lipid metabolism.

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MICHAEL ALLABY. "pyrimidine." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "pyrimidine." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O7-pyrimidine.html

MICHAEL ALLABY. "pyrimidine." A Dictionary of Plant Sciences. 1998. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-pyrimidine.html

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pyrimidine

A Dictionary of Biology | 2004 | Copyright

pyrimidine An organic nitrogenous base (see formula), sparingly soluble in water, that gives rise to a group of biologically important derivatives, notably uracil, thymine, and cytosine, which occur in nucleotides and nucleic acids (DNA and RNA).

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"pyrimidine." A Dictionary of Biology. 2004. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

"pyrimidine." A Dictionary of Biology. 2004. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O6-pyrimidine.html

"pyrimidine." A Dictionary of Biology. 2004. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-pyrimidine.html

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pyrimidine

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

pyrimidine , type of organic base found in certain coenzymes and in the nucleic acids of plant and animal tissue. The three major pyrimidines of almost universal distribution in living systems are cytosine , thymine , and uracil .

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"pyrimidine." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

"pyrimidine." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1E1-pyrimidi.html

"pyrimidine." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-pyrimidi.html

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pyrimidine

A Dictionary of Nursing | 2008 | Copyright

pyrimidine (pi-rim-i-deen) n. a nitrogen-containing compound with a ring molecular structure. The commonest pyrimidines are cytosine, thymine, and uracil, which form the nucleotides of nucleic acids.

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"pyrimidine." A Dictionary of Nursing. 2008. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

"pyrimidine." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O62-pyrimidine.html

"pyrimidine." A Dictionary of Nursing. 2008. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-pyrimidine.html

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pyrimidine

A Dictionary of Ecology | 2004 | | Copyright

pyrimidine A nitrogen base composed of a single, six-membered ring structure. The pyrimidine bases in the nucleotides of nucleic acids are cytosine and thymine in DNA and cytosine and uracil in RNA.

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MICHAEL ALLABY. "pyrimidine." A Dictionary of Ecology. 2004. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "pyrimidine." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O14-pyrimidine.html

MICHAEL ALLABY. "pyrimidine." A Dictionary of Ecology. 2004. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-pyrimidine.html

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