The structures of tridecaptins B and C. XXV. Studies on antibiotics from the genus Bacillus.

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Abstract
On examining the structures of the antibiotics tridecaptins B and C, the constituent amino acids were separated and their chiralities were determined. The constituent fatty acids were identified by gas chromatography and mass spectrometry. Cleavage with N-bromosuccinimide and sequential analysis by Edman degradation demonstrates the sequence of the C-terminal side of tridecaptins B and C. Deacylation with polymyxin acylase of tridecaptin B and successive Edman degradation revealed the sequence of the N-terminal side of tridecaptin B. Finally, partial acid hydrolysis on tridecaptin C clarified the sequence of the N-terminal side of tridecaptin C.