Recombinant Human 26S proteasome non-ATPase regulatory subunit 11 protein (PSMD11)

Uniprot Id

O00231

Target Species

Human

Target Name

PSMD11

Target Full Name

26S proteasome non-ATPase regulatory subunit 11

Target Function

Component of the 26S proteasome, a multiprotein complex involved in the ATP-dependent degradation of ubiquitinated proteins. This complex plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins, which could impair cellular functions, and by removing proteins whose functions are no longer required. Therefore, the proteasome participates in numerous cellular processes, including cell cycle progression, apoptosis, or DNA damage repair. 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.

Target Subcellular Location

Nucleus. Cytoplasm, cytosol.

Target Protein Families

Proteasome subunit S9 family

Target Tissue Specificity

Highly expressed in embryonic stem cells (ESCs). Expression decreases as ESCs differentiate.

Target Research Area

Cell Biology

Target Synonyms

26S proteasome non-ATPase regulatory subunit 11; 26S proteasome regulatory subunit 9; 26S proteasome regulatory subunit p44.5; 26S proteasome regulatory subunit RPN6; 26S proteasome regulatory subunit S9; MGC3844; p44.5; protease 26S, subunit, 9; proteasome (prosome, macropain) 26S subunit, non-ATPase, 11; proteasome 26S subunit, non-ATPase, 11; PSD11_HUMAN; PSMD 11; PSMD11; Rpn6; S9

Target Background

The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. This gene encodes a member of the proteasome subunit S9 family that functions as a non-ATPase subunit of the 19S regulator and is phosphorylated by AMP-activated protein kinase. Alternatively spliced transcript variants have been observed for this gene.