Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Structural Analysis of the Antifungal Antibiotic from Bacillus sp. YJ-63.

Bacillus sp. YJ-63이 생산하는 항곰팡이 항생물질의 구조분석

  • Published : 2002.03.01
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Abstract

Structural analysis was performed by the $^1$H-NMR, $^{13}$ C-NMR, amino acid composition analysis and FAB-mass. The instrumental analysis represented that the potential antifungal antibiotic belonged to the iturin E group antibiotic, consisting of 7 $\alpha$-amino acid residues and a collection of $\beta$-amino acid with aliphatic side chain. Compared to the Iturin E group, notably, the potent antifungal antibiotic from Bacillus sp. YJ-63 carried longer $\beta$-amino acid side chain. In conclusion, these findings identified a potential antibiotic, which contained a stable cyclopeptide structure with long $\beta$-amino acid side chain.

토양으로부터 분리한 Bacillus sp. YJ-63으로부터 항진균성 항생물질을 분리하여 그 구조를 분석한 결과는 다음과 같다. 항생물질은 7개의 $\alpha$-amino acid와 1개의 $\beta$-amino acid가 결합한 환상구조를 가지는 iturin E 계에 속하며 특히. $\beta$-amino acid의 methylene 수가 기존의 iturin E 보다 더 많은 것으로 나타났다.

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