质量标准
SpecificityAmixtureofatleastthreeproteolyticactivitiesincludinganextracellularserineprotease.Ingeneral,serineproteasesdisplayawiderangeofsubstratespecificities,whicharebelievedtobemediatedbyanactivesitecomposedofoneAsp,oneHis,andaSerresidueinthemolecule.Thisenzymepreferstohydrolyzepeptidebondsonthecarboxylsideofglutamicorasparticacid.
UnitDefinition1Ucorrespondstotheamountofenzymewhichliberates1μmolfolin-positiveaminoacidsandpeptides(calculatedastyrosine)perminuteatpH7.5and37°C(casein,FlukaNo.22078,assubstrate)
PhysicalpropertiesCompletelyinactivatedbyheatingabove80°Cfor15-20minutes.
storagetemp.−20°C
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