Description Proteinase K is a recombinant enzyme that expressed in Pichia pastoris which is originally isolated from the mold Tritirachium album. It is highly active, subtilisin-related serine endopeptidases that does not exhibit any pronounced cleavage specificity. Thus, Proteinase K is treated as a universal tool for nucleic acid template preparation Assay of Lyophilized Form of Proteinase K : Activity (37°C, with hemoglobin) : 43U/mgP Activity (25°C, with chromozyme) : 2.8U/mgL Specific activity (25°C, with chromozyme) : 3.24U/mgP Optimum pH : 6.5 and 9.5 pH range : 4.0 – 12.5 Endonuclease up to 200mcg w.MWM III-DNA : Not detectable. DNase up to 200mcg enzyme with pBR322-DNA : Not detectable. RNase up to 40mcg enzyme with MS 2-RNA : Not detectable. DNA (threshold) : 5pg/mg Bioburden : lt;13 CFU/g Cat : Vivantis PC0712