Share this entry
threonine Line breaks: threo|nine
Pronunciation: /ˈθriːəniːn/

Definition of threonine in English:


[mass noun] Biochemistry
A hydrophilic amino acid which is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.
Example sentences
  • The essential amino acids are histidine, tryptophan, threonine, valine, phenylalanine, leucine, methionine, lysine, and isoleusine.
  • The aspartate can be used as a precursor for the synthesis of other amino acids such as asparagine, threonine, isoleucine, leucine, valine, lysine, and methionine.
  • Nitrogen limitation in plants could explain the use of the polar amino acids serine and threonine instead of nitrogen-containing asparagine as in P. falciparum.


1930s: from threose (the name of a tetrose sugar) + -ine4.

Definition of threonine in:
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.

Subscribe to remove adverts and access premium resources