Final answer:
N-glycanase cleaves N-linked glycan chains from glycoproteins, while DUB is involved in the cleavage of ubiquitin from target proteins.
Step-by-step explanation:
The function of N-glycanase is to cleave N-linked glycan chains from glycoproteins. This process is important for the quality control of glycoproteins and the removal of misfolded or damaged proteins from the endoplasmic reticulum. N-glycanase also plays a role in protein degradation pathways.
DUB stands for deubiquitinating enzyme, which is involved in the cleavage of ubiquitin from target proteins. This process regulates protein turnover, protein localization, and protein-protein interactions. DUBs help to recycle ubiquitin and prevent the accumulation of ubiquitinated proteins.