Ethyl Acetate fraction of Streptomyces sp. CBMAI 2042 was investigated for identifying cyclodepsipeptides using electrospray ionisation tandem mass spectrometry (ESI-MS/MS). Without prior isolation, the structural determination was achieved on the basis of mass fragmentation pattern and comparison with the previously established data. The ESI-MS of the fraction in the positive ion mode gave clusters of singly and doubly charged molecular ion peaks. The ESI-MS spectrum showed peaks for the presence of the cyclodepsipeptides Valinomycin, Montanastatin and at least 5 structural analogues never reported before.
[doi:10.25345/C5MM09]
[dataset license: CC0 1.0 Universal (CC0 1.0)]
Keywords: cyclodepsipeptides, Streptomyces
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Bruno Sacchetto Paulo, State University of Campinas, Brazil |
Submitting User: | bspaulo |
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