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J Antibiot (Tokyo). 1992 Aug;45(8):1273-7.

Enniatin synthetases from different fusaria exhibiting distinct amino acid specificities.

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Institut für Biochemie und Molekulare Biologie, Technische Universität Berlin, Germany.


Enniatin synthetases from the cyclodepsipeptide producers Fusarium lateritium and Fusarium sambucinum were purified to homogeneity and characterized. Like the previously described enniatin synthetase from Fusarium scirpi both enzymes consist of a single polypeptide chain and are very similar concerning their Mr (250 kdaltons) and reaction mechanism. Limited proteolytic digests show only slight differences in their patterns in SDS-gels. Interestingly the synthetases differ in their amino acids specificities. The enzyme from the enniatin A producer F. sambucinum exhibits a high affinity to the substrate amino acids L-Leu and L-Ile. In contrast the synthetase from the enniatin B producer F. lateritium preferably accepts L-Val, the constituent amino acid of enniatin B.

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