TABLE I.
Nomenclature and Activity for Proteasome Catalytic Subunits
| Proteasome subunita |
Common nameb |
Alternative namesc | Gene | Activity |
|---|---|---|---|---|
| Beta type-6 | β1 | Y, Delta, LMP19, Pre3 | PSMB6 | Caspase-like |
| Beta type-9 | β1i | Lmp2, RING12, MC7 | PSMB9 | Chymotrypsin-like |
| Beta type-7 | β2 | Z, MC14, Lmp9, Pup1 | PSMB7 | Trypsin-like |
| Beta type-10 | β2i | MECL-1, Lmp10 | PSMB10 | Trypsin-like |
| Beta type-5 | β5 | X, epsilon, Lmp17, MB1, Pre2, Doa3, Prg1 |
PSMB5 | Chymotrypsin-like |
| Beta type-8 | β5i | Lmp7, RING10, Y2, C13 | PSMB8 | Chymotrypsin-like |
| Beta type-11 | β5t | Thymus-specific β5 | PSMB11 | Chymotrypsin-like |
a
UniProtKB nomenclature (www.uniprot.org).
b
Baumeister,12 names in italics are for yeast subunits.
c
Underlined alternative names will be used for the i-proteasome subunits.