Persipeptides A and B, two cyclic peptides from Streptomyces sp. UTMC 1154 |
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Authors: | Mohammadipanah Fatemeh Matasyoh Josphat Hamedi Javad Klenk Hans-Peter Laatsch Hartmut |
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Affiliation: | 1. Department of Organic Chemistry, University of Göttingen, Tammanstrasse 2, D-37077 Göttingen, Germany;2. Microbial Biotechnology Laboratory, Department of Microbiology, School of Biology, College of Science, University of Tehran, PO Box 14155-6455, Tehran, Iran;3. DSMZ—German Collection of Microorganisms and Cell Cultures GmbH, Inhoffenstraße 7B, D-38124 Braunschweig, Germany |
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Abstract: | Two new N-methylated cyclopeptides, persipeptide A (1) and B (2), have been isolated from Streptomyces sp. UTMC1154. Their structures were established using 1D and 2D NMR experiments. 2D TOCSY experiments were applied to identify the amino acid residues, while HMBC correlations were used to determine their sequence. According to Marfey's method, all amino acids had the l-configuration. The two cyclic peptides had the same ring size and amino acid composition, but differed in their sequence; they did not show activity against the tested bacteria, fungi and algae. Molecular identification experiments placed the strain in the genus Streptomyces closely related to Streptomyces coerulescens DSM40146(T) (99.45%) and Streptomyces varsoviensis DSM40346(T) (99.25%). |
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