(1) Departamento de Microbiología, Facultad de Biología, Universidad de León, Leon, Spain;(2) Present address: K.I.H.W.-V1., Zeedijk 101, 8400 Oostende, Belgium
Abstract:
Summary An improved HPLC method is described to separate isopenicillin N from its penicilloic acid and from the reduced and oxidized forms of -(L--amino-adipyl)-L-cysteinyl-D-valine and of DTT. When applied to assay the activity of isopenicillin N synthase only isopenicillin N and its penicilloic acid could be detected.