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Protein degradation activity of the 20S proteasome from M. thermophila
| Substrate | Sp acta |
|---|---|
| β-Casein | 31.0 |
| Dephosphorylated β-casein | 31.0 |
| Lysozyme | 52.0 |
| Bovine serum albumin | 2.0 |
| Phosphorylase b | 0.1 |
Expressed as nanomoles of leucine equivalents per hour per milligram of protein. The assay (60°C) contained 1.0 mg of substrate/ml and 0.067 mg of the 20S proteasome produced in E. coli per ml.
