Share this entry

intein Line breaks: in¦tein
Pronunciation: /ˈɪntiːn/

Definition of intein in English:


An internal segment of amino acids that is excised from a protein precursor to generate a new protein.
Example sentences
  • Intein excision depends on the splicing domain of the intein and the first amino acid residue of the C-extein.
  • It encodes a bifunctional protein with two domains, a homing endonuclease and a self-splicing intein.
  • The MSI group takes the molecule of interest - say, a protein ligand - and attaches an intein to it.


1990s: from internal + protein.

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.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day whippersnapper
Pronunciation: ˈwɪpəsnapə
a young, inexperienced person considered presumptuous or overconfident...