ubiquitin

[ yoo-bik-wi-tin ]
/ yuˈbɪk wɪ tɪn /

noun

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

Nearby words

  1. ubiquarian,
  2. ubique,
  3. ubiquinol,
  4. ubiquinone,
  5. ubiquitarian,
  6. ubiquitous,
  7. ubiquity,
  8. ubr,
  9. ubuntu,
  10. ubv photometry

Origin of ubiquitin

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


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 Formsubiquitination, 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

Medicine definitions for ubiquitin

ubiquitin

[ yōō-bĭkwĭ-tĭn ]

n.

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

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.