Definition of amino acid in English:

Share this entry

amino acid

Pronunciation: /əˌmēnō ˈasəd/


A simple organic compound containing both a carboxyl (—COOH) and an amino (—NH2) group.

Amino acids occur naturally in plant and animal tissues and are the basic constituents of proteins.

Example sentences
  • Two known enzymes catabolize the essential amino acid tryptophan in mammals.
  • To tackle this problem a variety of approaches have been developed to predict the three-dimensional structure of a protein given its amino-acid sequence.
  • The simplest amino acid is glycine which contains a hydrogen atom as its side group.

For editors and proofreaders

Syllabification: a·mi·no ac·id

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.