ABclonal Technology PSMD1 Rabbit pAb
The 26S proteasome is a multicatalytic proteinase complex composed of a 20S core and a 19S regulator. The 20S core has 4 rings made of 28 subunits, including 7 alpha and 7 beta subunits in each ring. The 19S regulator consists of a base with 6 ATPase subunits and 2 non-ATPase subunits, and a lid with up to 10 non-ATPase subunits. Proteasomes, found throughout eukaryotic cells, cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. A modified form, the immunoproteasome, processes class I MHC peptides. This gene encodes the largest non-ATPase subunit of the 19S regulator lid, responsible for substrate recognition and binding. Evidence suggests interactions with viral proteins, including coronaviruses. Alternative splicing produces multiple transcript variants.