On Glumamycin, a New Antibiotic. IV. The Amino Acid Moiety
- 1 September 1962
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 35 (9) , 1556-1559
- https://doi.org/10.1246/bcsj.35.1556
Abstract
Separatory determination was conducted on the seven amino acids contained in glumamycin. By the Moore-Stein method and by paper chromatography of the DNP-derivatives of the amino acids, 4 mol. of aspartic acid (including α(l, β-methylaspartic acid), 2 mol. each of glycine and α, β-diaminobutyric acid, and 1 mol. each of valine, pipecolic acid and proline were detected. Also, investigation was made into the free amino group of this antibiotic. The hydrolysate of DNP-glumamycin showed one yellow spot at Rf 0.68, which spot turned purple with ninhydrin. Compared these results with paper chromatogram of partially dinitrophenylated α, β-diaminobutyric acid, it was assumed that the β-amino group of one of the acids, is free, that the α-amino group participates in the peptide linkage in glumamycin, and that both amino groups of another α, β-diaminobutyric acid take part in the peptide linkage.Keywords
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