TABLE 2.
Purification step | Vol (ml) | Total protein (mg) | Sp act (U/mg) | Total activity (U)a | Yield (%) | Purification (fold) |
---|---|---|---|---|---|---|
Crude extract | 5 | 191.1 | 3.6 | 696 | 100 | 1.0 |
Glutathione-Sepharose | 12 | 5.5 | 63.5 | 351 | 50 | 17.4 |
DEAE-cellulose | 27 | 2.7 | 67.3 | 182 | 26 | 18.5 |
Mono Q | 5 | 1.2 | 75.9 | 87 | 13 | 20.8 |
One unit of BgpA was defined as the amount of enzyme liberating 1 μmol/min of p-nitrophenol.