Abstract
Novel pepstatin A-sensitive Candida albicans aspartyl protease inhibitors, named YF-0200R-A and B, were isolated by column chromatography and preparative HPLC from the fermentation broth of Streptomyces sp. YF-0200R. The structures of YF-0200R-A and B were elucidated by spectroscopic analysis as alpha, beta and gamma, delta unsaturated fatty acids with two or three hydroxyl groups. YF-0200R-A and B inhibit aspartyl protease from Candida albicans with IC50 values of 6.5 x 10(-4) M and 6.2 x 10(-4) M, respectively.
MeSH terms
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Aspartic Acid Endopeptidases / antagonists & inhibitors*
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Candida albicans / enzymology
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Chemical Phenomena
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Chemistry, Physical
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Fatty Acids, Unsaturated / chemistry*
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Fatty Acids, Unsaturated / isolation & purification
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Fatty Acids, Unsaturated / pharmacology
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Fermentation
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Magnetic Resonance Spectroscopy
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Molecular Structure
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Protease Inhibitors / chemistry*
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Protease Inhibitors / isolation & purification
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Protease Inhibitors / pharmacology
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Streptomyces / chemistry
Substances
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Fatty Acids, Unsaturated
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Protease Inhibitors
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YF 0200R-A
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YF 0200R-B
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Aspartic Acid Endopeptidases