Mutational biosynthesis of neomycin analogs by a mutant of neomycin-producing Streptomyces fradiae
Mutational biosynthesis of neomycin analogs by a mutant of neomycin-producing Streptomyces fradiae
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产新霉素弗氏链霉菌突变体突变生物合成新霉素类似物
DOI:
10.1007/s12223-011-0082-5
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发表时间:
2011-11
期刊:
影响因子:
--
通讯作者:
陶科
中科院分区:
文献类型:
--
作者:
史冠莹;侯太平;陶科
Neomycin, produced by Streptomyces fradiae, has been widely used for the treatment of bacterial infections in clinical and agricultural applications. In this study, a neomycin nonproducing mutant of S. fradiae was obtained by gene disruption technique for mutational biosynthesis. A crucial gene neoC (neo7) which encodes 2-deoxystreptamine (2-DOS) synthases was disrupted. The mutant could resume producing neomycin in the presence of 2-DOS. Salen derivatives of 2-DOS were synthesized and individually added to cultures of the mutant. Antibacterial activity of the mutasynthesis products against Staphylococcus aureus and four plant pathogenic bacteria (Pseudomonas solanacarum, Erwinia carotovora, Xanthomonas oryzae, and Xanthomonas campestris) was detected quantitatively by Oxford cup method. It is suggested that all 2-DOS derivatives were incorporated by the mutant into new active neomycin analogs except for 2-DOS derivative 2d ((1R,2r,3S,4R,6S)-4,6-bis((E)-3,5-di-tert-butyl-2-hydroxybenzylideneamino)cyclohexane-1,2,3-triol). Neomycin analogs produced by feeding 2-DOS derivative 2a ((1R,2r,3S,4R,6S)-4,6-bis((E)-2 hydroxybenzylideneamino)cyclohexane-1,2,3-triol) to cultures of the mutant displayed a similar antibacterial activity with neomycin produced by wild strain.
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影响因子:
4.7
作者:
崔文华;侯太平;陶科
通讯作者:
陶科
影响因子:
1.8
作者:
K. Rinehart
通讯作者:
K. Rinehart
影响因子:
2.6
作者:
M. Myronovskyy;B. Ostash;I. Ostash;V. Fedorenko
通讯作者:
M. Myronovskyy;B. Ostash;I. Ostash;V. Fedorenko
DOI:
--
发表时间:
2000
期刊:
--
影响因子:
--
作者:
T. Kieser
通讯作者:
T. Kieser
影响因子:
2.6
作者:
Mehta, R;Champney, WS
通讯作者:
Champney, WS