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chaperonin Syllabification: chap·er·o·nin
Pronunciation: /ˌSHapəˈrōnən/

Definition of chaperonin in English:


A protein that aids the assembly and folding of other protein molecules in living cells.
Example sentences
  • In addition to folding new proteins, chaperonins also re-fold old proteins which have somehow gotten twisted out of shape.
  • The best studied chaperone is the bacterial chaperonin, GroEL, a large protein shaped like a double ring with dyad symmetry under certain conditions.
  • The biogenesis of microtubules in the cell comprises a series of complex steps, including protein-folding reactions catalyzed by chaperonins.


Late 20th century: from chaperone + -in1.

Definition of chaperonin in:

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Pronunciation: fɔːˈtɪsɪməʊ
(especially as a direction) very loud or loudly