The Journal of Antibiotics
Online ISSN : 1881-1469
Print ISSN : 0021-8820
ISSN-L : 0021-8820
USTILOXINS, ANTIMITOTIC CYCLIC PEPTIDES FROM FALSE SMUT BALLS ON RICE PANICLES CAUSED BY Ustilaginoidea virens
YUKIKO KOISO, YIN LI, SHIGEO IWASAKI, KENJI HANAKA, TOMOWO KOBAYASHI, RYOICHI SONODA, YOSHIKATSU FUJITA, HIROSHI YAEGASHI, ZENJI SATO
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1994 Volume 47 Issue 7 Pages 765-773

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Abstract

Ustiloxins A (1a), B (1b), C (1c), D (1d) and E (1e), antimitotic peptides, have been isolated from the water extract of false smut balls caused on the panicles of rice plant by a fungus Ustilaginoidea virens. The structure of 1b was assigned from its spectral property and its amino acid analysis in relation to 1a whose structure was determined previously by a conbination of X-ray crystallographic and amino acid analyses. Structures of 1c and 1d were elucidated by their spectroscopic data, specially based on their 1H and 13C NMR spectra. Bioactivities of these compounds against microtubule assembly as well as manmal, plant and fungal cells have been studied.

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The Journal of Antibiotics, Series A

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