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alanine
alanine , organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l -stereoisomer participates in the biosynthesis of proteins (see stereochemistry ). Its side chain is a nonpolar, hydrophobic methyl group. The low reactivity of the amino acid permits silk, a protein which contains some 30% alanine, to have a simple, elongated structure with few cross-links. This contributes to the desirable features of the fiber-strength, resistance to stretching, and flexibility. Alanine is not essential to the human diet, since it can be synthesized from other cellular metabolites. It was discovered in protein in 1875. |
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"alanine." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "alanine." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1E1-alanine.html "alanine." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-alanine.html |
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alanine
alanine A non‐essential amino acid, found in all proteins. β‐Alanine is an isomer in which the amino group is attached to carbon‐3 rather than carbon‐2; it is important as part of pantothenic acid, carnosine, and anserine.
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DAVID A. BENDER. "alanine." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. DAVID A. BENDER. "alanine." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O39-alanine.html DAVID A. BENDER. "alanine." A Dictionary of Food and Nutrition. 2005. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O39-alanine.html |
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alanine
alanine An aliphatic, non-polar amino acid, classed as non-essential in the diet of animals because it can be synthesized in sufficient amounts within cells.
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MICHAEL ALLABY. "alanine." A Dictionary of Zoology. 1999. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "alanine." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O8-alanine.html MICHAEL ALLABY. "alanine." A Dictionary of Zoology. 1999. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-alanine.html |
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alanine
alanine (al-ă-neen) n. see amino acid.
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"alanine." A Dictionary of Nursing. 2008. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "alanine." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O62-alanine.html "alanine." A Dictionary of Nursing. 2008. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-alanine.html |
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alanine
alanine See amino acid.
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"alanine." A Dictionary of Biology. 2004. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "alanine." A Dictionary of Biology. 2004. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O6-alanine.html "alanine." A Dictionary of Biology. 2004. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-alanine.html |
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