Experimental analysis demonstrates the role of N-glycan glucosylation in lysosomal clearance of mutant Neuroserpin, indicating important cellular mechanisms of protein degradation.
Key Points
This study aims to understand how N-glycans affect the degradation process of mutant Neuroserpin linked to a specific disease.
Investigated the polymerization-prone Portland variant of Neuroserpin.
Examined the role of lectin chaperones, ER-phagy receptors, and SNARE proteins in lysosomal clearance.
Focused on the impact of glucosylation on the processing of N-glycans in relation to ER-to-Lysosome-Associated Degradation.
Showed that persistent N-glycan glucosylation signals ER-to-Lysosome-Associated Degradation mechanisms.
Demonstrated that the clearance of the Portland variant depends on the LC3-dependent delivery branch of ERLAD.
Revealed the involvement of specific proteins, including Calnexin and Syntaxin17, in the lysosomal degradation of misfolded Neuroserpin.