https://pmc.ncbi.nlm.nih.gov/articles/PMC14921/
The APC11 RING-H2 Finger Mediates E2-Dependent Ubiquitination - PMC
Polyubiquitination marks proteins for degradation by the 26S proteasome and is carried out by a cascade of enzymes that includes ubiquitin-activating enzymes...
ringfingerdependentubiquitinationpmc