ubiquitin

[ yoo-bik-wi-tin ]

/ yuˈbɪk wɪ tɪn /

Save This Word!

noun

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

QUIZ

CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?

There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?

Question 1 of 7

Which sentence is correct?

His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

TAKE THE QUIZ TO FIND OUT

Origin of ubiquitin

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

Words nearby ubiquitin

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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