Standard Lemma guide

ubiquitin

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /juːˈbɪkwɪtɪn/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 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.

Definition source: English Wiktionary via Wiktextract

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From ubiquitous + -in.

Across languages

Translations

15 source translations are retained for this English entry.

  • Armenian: ուբիքվիտին (ubikʻvitin) — small polypeptide
  • Bashkir: убиквитин (ubikvitin) — small polypeptide
  • Bulgarian: убиквитин (ubikvitin) — small polypeptide
  • Chinese Mandarin: 泛素 (fànsù) — small polypeptide
  • French: ubiquitine — small polypeptide
  • Indonesian: ubikitinasi — small polypeptide
  • Italian: ubiquitina — small polypeptide
  • Japanese: ユビキチン (yubikichin) — small polypeptide
  • Kazakh: убиквитин (ubikvitin) — small polypeptide
  • Korean: 유비퀴틴 (yubikwitin) — small polypeptide
  • Kyrgyz: убиквитин (ubikvitin) — small polypeptide
  • Latin: ubiquitinum — small polypeptide
  • Persian: یوبیکوتین — small polypeptide
  • Spanish: ubiquitina — small polypeptide
  • Turkish: ubikuitin — small polypeptide
Real reading context

ubiquitin in complete knowledge articles