Noun
English Wikipedia has an article on:polyubiquitinationWikipedia
polyubiquitination (plural polyubiquitinations)
(biochemistry) The addition of a series of ubiquitin molecules to another protein
Lysine 63-linked polyubiquitination of PCNA allows it to perform a less error-prone mutation bypass known by the template switching pathway. Source: Internet
The monoubiquitination of a protein can have different effects to the polyubiquitination of the same protein. Source: Internet
The protein modifications can be either a single ubiquitin protein (monoubiquitination) or a chain of ubiquitin (polyubiquitination). Source: Internet