Purity ≥90%. Human Prolyl oligopeptidase (POP)/Prolyl endopeptidase (PREP) (GenBank Accession No. NM_002726) full length with N-terminal His tag. Applications: Suitable for use in the study of enzyme kinetics, screening inhibitors and selectivity profiling. Specific Activity: ~6 pmol/min/ug Assay Conditions: 50mM Tris, pH 7.5, 0.1% BSA, 20uM substrate (A-P-AMC) and 5ng POP at RT for 30 minutes.