Definition of Ubiquitination
Ubiquitination: The "kiss of death" process for a protein. In ubiquitination, a protein is inactivated by attaching ubiquitin to it. Ubiquitin is a small molecule. It acts as a tag that signals the protein-transport machinery to ferry the protein to the proteasome for degradation. For more information, see: Ubiquitin.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 10/9/2012
Medical Dictionary Definitions A - Z
Search Medical Dictionary
eMedicineHealth Top News
Find out what women really need.