Proteinase K from Tritirachium album P6556 - lyophilized powder, ≥30 units/mg proteinDOWNLOAD MSDS (PDF) Synonym: Endopeptidase K CAS Number: 39450-01-6 Enzyme Commission (EC) Number: 3.4.21.64 ( BRENDA | IUBMB ) EC Number: 254-457-8 MDL number: MFCD00132129 mol wt mol wt 28.93 kDa foreign activity Dnase ≤30 Kunitz units/mg solid RNase ≤0.003 Kunitz units/mg solid storage temp. −20°C