Abstract
We have recently reported on the isolation of a mixture of polypeptides of the peptaibol group from the mold Stilbella flavipes, strain CBS 146.81 [1]. Groups of peptides isolated by preparative TLC were named stilboflavins (SF) A, B, and C. The sequences of SF B were investigated by ESI-MS, GC-MS and quantitative amino acid analysis and shown to represent a mixture of 10 microheterogeneous N-acetylated 20-residue peptides distinguished by exchange of certain amino acids, as well as C-terminal amino alcohols, valinol, leucinol and isoleucinol. We now report on the sequences of SF A peptides and their relation to SF B peptides. For full details we refer to the literature [2].
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