recombinant, expressed in E. coli, ≥90% (SDS-PAGE)

lyophilized powder, beige, ≥0.5 U/g

recombinant, expressed in E. coli; ≥90% (SDS-PAGE)

≥1500 units/μg protein; recombinant, expressed in Sf9 cells

≥1.5 AU-N/G

lyophilized powder, 50-150 units/mg protein

Type IV-S, ammonium sulfate suspension, 10-40 units/mg protein (Bradford)

Type VI-S, lyophilized powder, ≥12 units/mg protein (biuret)