Publicado 12 números por año
ISSN Imprimir: 1521-9437
ISSN En Línea: 1940-4344
Indexed in
Flammulin Purified from the Fruit Bodies of Flammulina velutipes (Curt.:Fr.) P.Karst.
SINOPSIS
Flammulin, an antitumor substance, was purified from the aqueous extract of basidiomes of Flammulina velutipes (Curt.: Fr.) P.Karst. It was judged homogenous by SDS-polyacrylamide gel electrophoresis. The purification procedure included ammonium sulfate precipitation, ethanol fractionation, DEAE-Sephadex anion-exchange chromatography, crystallization, and recrystallization. Flammulin was crystallized with microdialysis against a polyethylene glycol sodium phosphate buffer. The crystals were rhombohedron-shaped and easy to melt when the crystallization conditions were changed. With a molecular mass of 23,700, flammulin was characterized by its lack of Met. Amino acid composition analysis showed that the numbers of acidic amino acids are more than that of basic amino acids, but the isoelectric point detected by analytical isoelectric focusing was at pH8.9.
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