- a small protein, present in all eukaryotic cells, that participates in the destruction of defective proteins and in the synthesis of new proteins.
Origin of ubiquitin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- biochem a small polypeptide, found in most eukaryotic cells, that combines with other proteins to make them susceptible to degradation
C20: from ubiquitous + -in
- A polypeptide found in all eukaryotic cells, including plant cells, that participates in a variety of cellular functions including protein degradation.