polyubiquitin

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noun

A chain of several ubiquitin molecules attached to a protein.

OriginEnglish ubiquitin ← Ancient Greek πολῠ́ς (polŭ́s) ← Proto-Indo-European *polh₁ús →
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Meanings

nounpolyubiquitin (plural polyubiquitins)

plural polyubiquitins

  1. biochemistryA chain of several ubiquitin molecules attached to a protein.

Origin

  1. Proto-Indo-European*pleh₁-
  2. Proto-Indo-European*polh₁ús
  3. Ancient Greekπολῠ́ς (polŭ́s)
  4. Englishpoly-
  5. Englishubiquitin
  6. Englishpolyubiquitin

From poly- + ubiquitin.

Full word history & related roots →
Cite this entry
APA

polyubiquitin. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/polyubiquitin

MLA

“polyubiquitin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/polyubiquitin. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “polyubiquitin,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/polyubiquitin.

Source: polyubiquitin on Wiktionary, CC BY-SA 4.0.