抄録
Mugiline β was hydrolysed with H2SO4 and 9.5% proline, 4.3% alanine, and 6.5% of valine were obtained. It contained no other basic amino acid than arginine, which amounted to 73.98%. This was calculated from arginine flavianate which was estimated in a small portion of the sample.
The molecular proportion of arginine and other monoamino acids is approximately 2:1, so that it can be expressed a2m as asserted by A. Kossel, denoting arginine and monoamino acid as a and m respectively.
In addition, a small amount of valine anhydride was isolated from the hydrolysate, showing that a part of valine probably forms a dipeptide of valine: valylvaline in the molecule of mugiline β.
