Table 2. Purification of His6–BjHMGS1 from a 1 litre culture of pBj75-transformed E. coli BL21 Star (DE3) pLysS cells following induction with 0.5 mM IPTG.
Crude cell extract | Ni2+-NTA purified fraction | |
---|---|---|
Volume (ml) | 24.5 | 5.5 |
Total protein (mg) | 43.5 | 4.95 |
Total activity (μmol·min−1) | 1.13 | 0.52 |
Specific activity (μmol·min−1·mg−1) | 0.02 | 0.10 |
Yield (%) | 100.00 | 46.01 |
Enzyme activity was measured in the presence of equimolar concentrations of [14C]acetyl-CoA and AcAc-CoA at 30 °C.