| Literature DB >> 6546810 |
I J Hollander, Y Q Shen, J Heim, A L Demain, S Wolfe.
Abstract
Isopenicillin N synthetase (cyclase) has been purified to homogeneity from Cephalosporium acremonium strain C-10. The enzyme has a molecular weight of 40,000 to 42,000 and yields a single band on sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The enzyme was purified in 10 percent yield by a combination of protamine sulfate and ammonium sulfate precipitations, gel filtration, and ion-exchange high-performance liquid chromatography. The purified enzyme can be stabilized with sucrose and stored at -20 degrees C for several weeks without any loss in activity.Entities:
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Year: 1984 PMID: 6546810 DOI: 10.1126/science.6546810
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728