| Antiviral, Antimicrobial, and Cytotoxic Properties of Peptavirins A and B Produces by Apiocrea sp. 14T |
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Woon Hyun Yeo, Bong Sik Yun, Young Sook Kim, Sang Jun Lee, Ik Dong Yoo, Kab Sig Kim, Eun Kyung Park, Jong Chull Lee, Young Ho Kim |
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| Abstract |
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Two peptaibol antibiotics, peptavirins A and B, which exhibited strong inhibitory effect against Tobacco mosaic virus (TMV) infection, were isolated from steam-cooked rice culture of Apiocrea sp. 14T. The peptavirins were identified as new derivatives of chrysospermins, which are 19-mer and have been reported to be produced in a fungal isolate. The physicochemical properties of the peptavirins were mostly identical with chrysospermins A through D except for the UV absorption spectrum. The peptavirins inhibited the growths of the Grampositive bacteria tested, including the plant pathogenic bacterium, Corynebacterium lilium, and the fungus, Aspergillus niger. Peptavirin A was somewhat cytotoxic to cancer cell lines, especially K562 (leukemia) and DACC 62 (melanoma), whereas peptavirin B only exhibited slight cytotoxicity. |
| Key Words:
antimicrobial activity, Apiocrea sp., cytotoxicity, peptavirins, peptaibol antibiotics |
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