PSMD11: Proteins and Enzymes

PSMD11 (Proteasome 26S non-ATPase subunit 11), also known as S9, Rpn6 or p44.5, has multi-subunit protease complexes consisting of 20S subunits composed of four seven-numbered rings with two outer rings containing alpha subunits and two central rings composed of beta subunits, and 19S caps of 6 ATPase and 11 non-ATPase subunits. PSMD11 is the main proteolytic enzyme that functions in ATP-dependent degradation of ubiquitinated proteins.