Ubiquitin

//juːˈbɪkwɪtɪn// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    Any of a class of small protein, or polypeptide, present in the cells of all eukaryotes, that play a part in modifying and degrading proteins.

Etymology

From ubiquitous + -in.

Related phrases

small ubiquitin-related modifierubiquitin ligase

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.