Component of the lid subcomplex of the 26S proteasome, a multiprotein complex involved in the ATP-dependent degradation of ubiquitinated proteins. In the complex, PSMD11 is required for proteasome assembly. Plays a key role in increased proteasome activity in embryonic stem cells (ESCs): its high expression in ESCs promotes enhanced assembly of the 26S proteasome, followed by higher proteasome activity.
Hoffman L., FEBS Lett. 404:179-184(1997).
Saito A., Gene 203:241-250(1997).
The MGC Project Team; Genome Res. 14:2121-2127(2004).