Proteasome Subunit Beta Type-9

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Proteasome subunit beta type-9 (219 aa, ~23 kDa) is encoded by the human PSMB9 gene. This protein is involved in the proteolytic processing of antigenic proteins into peptides that bind to major histocompatibility complex class I proteins.

**Synonyms:** - Large Multifunctional Peptidase 2 - Large Multifunctional Protease 2 - Low Molecular Mass Protein 2 - Macropain Chain 7 - Multicatalytic Endopeptidase Complex Chain 7 - PSMB9 - Proteasome Catalytic Subunit 1i - Proteasome Chain 7 - Proteasome Subunit Beta 6i - Proteasome Subunit Beta-1i - Proteasome Subunit, Beta-Type, 9 - RING12 Protein - Really Interesting New Gene 12 Protein