Function:
Chaperone protein which promotes assembly of the 20S proteasome as part of a heterodimer with PSMG1. The PSMG1-PSMG2 heterodimer binds to the PSMA5 and PSMA7 proteasome subunits, promotes assembly of the proteasome alpha subunits into the heteroheptameric alpha ring and prevents alpha ring dimerization.
Subcellular Location:
Nucleus.
Tissue Specificity:
Widely expressed with highest levels in lung, brain and colon. Moderately expressed in muscle, stomach, spleen and heart. Weakly expressed in small intestine, pancreas and liver. Highly expressed in hepatocellular carcinomas with low levels in surrounding liver tissue.
Post-translational modifications:
Degraded by the proteasome upon completion of 20S proteasome maturation.
Similarity:
Belongs to the PSMG2 family.
Database links:
Entrez Gene: 56984 Human
Entrez Gene: 533993 Cow
Entrez Gene: 107047 Mouse
Entrez Gene: 291539 Rat
Omim: 609702 Human
SwissProt: Q2NL24 Cow
SwissProt: Q969U7 Human
SwissProt: Q9EST4 Mouse
Unigene: 464652 Human
Unigene: 150701 Mouse
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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