WANI Dictionary

Ubiquitin

Ubiquitin is a protein ubiquitously found in eukaryotes, which functions as a molecular tag for proteasomal degradation and regulation of protein functions/cellular localization.

Definitions in the literature

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• A small protein (consisting of 76 amino acid residues), found universally in eukaryotes, that tags proteins destined for degradation by proteasomes or alters the protein's function, location, or trafficking [1].