Definition of alanine in English:

alanine

Pronunciation /ˈaləˌnēn/ /ˈæləˌnin/

noun

Biochemistry
  • An amino acid which is a constituent of most proteins.

    Alternative name: 2-aminopropanoic acid; chemical formula: CH₃CH(NH₂)COOH. β-alanine, an isomer of this, is 3-aminopropanoic acid, (NH₂)CH₂CH₂COOH

    ‘Other examples of amino acids are alanine, leucine, cysteine, arginine, and tryptophan.’
    • ‘All of these silks are composed of protein chains in which the amino acids glycine, alanine, and serine dominate.’
    • ‘Also, a combination of the amino acids glycine, alanine and glutamic acid can relieve symptoms of prostatitis.’
    • ‘The neutral amino acids alanine, threonine and valine accumulated in the vesicles by factors of 30-50.’
    • ‘They look like alanine molecules, or amino acids, or like chloroform.’

Origin

Mid 19th century coined in German as Alanin, from aldehyde + -an(for ease of pronunciation) + -ine.