Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A crystalline amino acid, C3H7NO2, that is a constituent of many proteins.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) one of the natural amino acids found combined in the proteins of most living tissues. It can be isolated as a white crystalline base, C3H7NO2. The natural form is the L-configuration.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biochemistry, uncountable A nonessential amino acid 2-aminopropanoic acid found in most animal proteins
  • noun countable A specific residue, molecule, or isomer of this amino acid

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

  • noun a crystalline amino acid that occurs in many proteins

Etymologies

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

[German Alanin, ultimately from Aldehyd, aldehyde; see aldehyde.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From the word aldehyde.

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Examples

  • Chirality in the amino acid alanine is illustrated with models of its two forms, which are mirror images of each other.

    The Nobel Prize in Chemistry 2001 - Information for the Public 2001

  • When alanine is produced in a laboratory under normal conditions, a mixture is obtained, half of which consists of (R) - alanine and half of (S) - alanine.

    The Nobel Prize in Chemistry 2001 2001

  • When alanine is produced in a laboratory under normal conditions, a mixture is obtained, half of which is (S) - alanine and the other (R) - alanine.

    The Nobel Prize in Chemistry 2001 - Information for the Public 2001

  • Two important liver enzymes are called alanine transaminase (ALT; also called serum glutamic pyruvic transaminase, or SGPT) and aspartate transaminase (AST; also called serum glutamic oxaloacetic transaminase, or SGOT).

    DR. SANJIV CHOPRA’S LIVER BOOK Sanjiv Chopra 2001

  • Moreover, the levels of two liver enzymes called alanine transaminase (ALT) and aspartate transaminase (AST) were markedly elevated; these enzyme levels tend to soar with various types of liver disorders, including viral infections and liver damage caused by a number of drugs.

    DR. SANJIV CHOPRA’S LIVER BOOK Sanjiv Chopra 2001

  • That is, if the donor’s blood revealed an elevated level of a liver enzyme called alanine transaminase ALT or was positive for the hepatitis B core antibody, there was a chance that this donor was in fact infected with hepatitis C, and that the use of his blood might lead to the transmission of HCV.

    DR. SANJIV CHOPRA’S LIVER BOOK Sanjiv Chopra 2001

  • Elevation of circulating amino acids such as alanine and BCAAs has been recognized as a marker of protein overfeeding and is often associated with an insulin resistant state, for instance, in obese individuals

    PLoS ONE Alerts: New Articles Yasushi Noguchi et al. 2010

  • • Liver function, looking at measures such as the enzyme alanine aminotransferase, or ALT

    Worried About Cholesterol? Order Your Own Tests Anna Wilde Mathews 2011

  • It is possible to make an amino acid with more than one combination of these letters — for example, GCC and GCG both code for the amino acid alanine.

    Fake virus could make safe new vaccines « Isegoria 2008

  • The purpose of the current study was to investigate to what extent metabolic syndrome in adolescents was associated with elevated levels of the liver enzyme alanine aminotransferase ALT, a marker of NAFLD.

    Sous Vide Supreme | The Blog of Michael R. Eades, M.D. 2009

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