storing penicillin-amidase

Gernot T. John g.john at
Tue Mar 9 05:59:36 EST 1999


today we discovered an old solution of penicillin-amidase from E.coli
(EC in our fridge. It was stored there for about 4 months at
-4°C. (I don't know who put it there!!!) At this temperature it is
liquid. The supplier specifies that the enzyme is to stored below -18°C,
where the solution is freezed.
Does anybody know whether this solution is still OK?


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