ubiquitin

[ yoo-bik-wi-tin ]

/ yuˈbɪk wɪ tɪn /

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noun

a small protein, present in all eukaryotic cells, that participates in the destruction of defective proteins and in the synthesis of new proteins.

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Origin of ubiquitin

First recorded in 1985–90; ubiquit(ous) + -in¹

Words nearby ubiquitin

ubiety, ubique, ubiquinol, ubiquinone, Ubiquitarian, ubiquitin, ubiquitous, ubiquity, ubi sunt, ubi supra, U-boat

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

British Dictionary definitions for ubiquitin

ubiquitin

/ (juːˈbɪkwɪtɪn) /

noun

biochem a small polypeptide, found in most eukaryotic cells, that combines with other proteins to make them susceptible to degradation

Derived forms of ubiquitin

ubiquitination, noun

Word Origin for ubiquitin

C20: from ubiquitous + -in

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for ubiquitin

ubiquitin

[ yōō-bĭk′wĭ-tĭn ]

A polypeptide found in all eukaryotic cells, including plant cells, that participates in a variety of cellular functions including protein degradation.