Definition of Amino acid
1. Noun. Organic compounds containing an amino group and a carboxylic acid group. "Proteins are composed of various proportions of about 20 common amino acids"
Specialized synonyms: Alanine, Asparagine, Aspartic Acid, Canavanine, Citrulline, Cysteine, Cystine, Dihydroxyphenylalanine, Dopa, Essential Amino Acid, Gaba, Gamma Aminobutyric Acid, Glutamic Acid, Glutaminic Acid, Glutamine, Glycine, Hydroxyproline, Iodoamino Acid, Ornithine, Proline, Creatin, Creatine, Sarcosine, Serine, Thyronine, Tyramine, Tyrosine
Generic synonyms: Organic Compound
Substance meronyms: Protein
Definition of Amino acid
1. Noun. (organic chemistry) Any organic compound containing both an amino and a carboxylic acid functional group. ¹
2. Noun. (biochemistry) Any of the twenty naturally occurring ?-amino acids (having the amino, and carboxylic acid groups on the same carbon atom), and a variety of side chains, that combine, via peptide bonds, to form proteins. ¹
¹ Source: wiktionary.com
Medical Definition of Amino acid
Amino Acid Pictures
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Lexicographical Neighbors of Amino Acid
Literary usage of Amino acid
Below you will find example usage of this term as found in modern and/or classical literature:
1. Elements of the Comparative Anatomy of Vertebrates by Gustav Mann, Walther Löb, Henry William Frederic Lorenz, Robert Wiedersheim, William Newton Parker, Thomas Jeffery Parker, Harry Clary Jones, Sunao Tawara, Leverett White Brownell, Max Julius Louis Le Blanc, Willis Rodney Whitney, John Wesley Brown, Wi (1906)
"... converted into carbethoxy-compounds, and the latter by gentle warming with thionyl chloride into carbethoxy-amino-acid chlorides, for thionyl chloride, ..."
2. Science by American Association for the Advancement of Science (1919)
"The maximum increase produced in the blood of the liver by the different materials is given in Table 1. I* may be seen that the amino acid, ..."
3. Monographic Medicine by William Robie Patten Emerson, Guido Guerrini, William Brown, Wendell Christopher Phillips, John Whitridge Williams, John Appleton Swett, Hans Günther, Mario Mariotti, Hugh Grant Rowell (1916)
"The amino-acid nitrogen in the normal total 24 hours urine as determined by ... The cases of pathological increase in the amino-acid nitrogen fraction in ..."
4. Chemical Abstracts by American Chemical Society (1916)
"The ratio of amino acid N to urea N varies from 3.7:1 to i :6, so that one cannot definitely know the amino acid or urea content from the "rest" N figures. ..."
5. The Harvey Lectures by Harvey Society of New York, New York Academy of Medicine (1917)
"This is different in every amino-acid. It is the source of the individuality of each. There are eighteen varieties of such heads, as may be seen by glancing ..."
6. Journal of the American Chemical Society by American Chemical Society (1914)
"In 10 cc. the total amino nitrogen was estimated by the amino apparatus.3 A 5 cc. portion was used for the determination of the amino acid nitrogen by the ..."
7. The Journal of Biological Chemistry by American Society of Biological Chemists (1917)
"Histidine was removed with HgCl2 and the resultant amino-acid mixture gave a negative nitrogen balance. Addition of histidine had not the effect of ..."