Mullinamides A and B, New Cyclopeptides Produced by the Ruth Mullins Coal Mine Fire Isolate Streptomyces sp. RM-27-46

Two new cyclopeptides, mullinamides A [cyclo-(-l-Gly-l-Glu-l-Val-l-Ile-l-Pro-)] and B [cyclo-(-l-Glu-l-Met-l-Pro-)] were isolated from the crude extract of terrestrial Streptomyces sp. RM-27-46 along with the three known cyclopeptides surugamide A [cyclo-(-l-Ile-d-Ile-l-Lys-l-Ile-d-Phe-d-Leu-l-Ile-d...

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Detalles Bibliográficos
Autores principales: Wang, Xiachang, Shaaban, Khaled A., Elshahawi, Sherif I., Ponomareva, Larissa V., Sunkara, Manjula, Copley, Gregory C., Hower, James C., Morris, Andrew J., Kharel, Madan K., Thorson, Jon S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4146655/
https://www.ncbi.nlm.nih.gov/pubmed/24713874
http://dx.doi.org/10.1038/ja.2014.37
Descripción
Sumario:Two new cyclopeptides, mullinamides A [cyclo-(-l-Gly-l-Glu-l-Val-l-Ile-l-Pro-)] and B [cyclo-(-l-Glu-l-Met-l-Pro-)] were isolated from the crude extract of terrestrial Streptomyces sp. RM-27-46 along with the three known cyclopeptides surugamide A [cyclo-(-l-Ile-d-Ile-l-Lys-l-Ile-d-Phe-d-Leu-l-Ile-d-Ala-)], cyclo-(-l-Pro-l-Phe-) and cyclo-(-l-Pro-l-Leu-). The structures of the new compounds were elucidated by the cumulative analyses of NMR spectroscopy and high resolution mass spectrometry. While mullinamides A and B displayed no appreciable antimicrobial/fungal activity or cytotoxicity, this study highlights the first reported antibacterial activity of surugamide A.

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