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Bacisubin, an antifungal protein with ribonuclease and hemagglutinating activities from Bacillus subtilis strain B-916

文献类型： 外文期刊

作者： Liu, Yongfeng 1 ; Chen, Zhiyi 1 ; Ng, T. B. 1 ; Zhang, Jie 2 ; Zhou, Mingguo; Song, Fuping; Lu, Fan; Liu, Youzho 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Peoples R China; Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100094, Peoples R China; Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Peoples R China; Chinese Univ Hong Kong, Fac Med, Dept Biochem, Shatin, Hong Kong, Peoples R China

2.Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Peoples R China; Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100094, Peoples R China; Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, People

关键词： Bacillus subtilis;antifungal protein;purification

期刊名称：PEPTIDES （ 影响因子：3.75； 五年影响因子：3.389 ）

ISSN： 0196-9781

年卷期： 2007 年 28 卷 3 期

页码：

收录情况： SCI

摘要： An antifungal protein, with a molecular mass of 41.9 kDa, and designated as bacisubin, was isolated from a culture of Bacillus subtilis strain B-916. The isolation procedure consisted of ion exchange chromatography on DEAE-Sepharose Fast Flow, and fast protein liquid chromatography on Phenyl Sepharose 6 Fast Flow and hydroxyapatite columns. The protein was adsorbed on all three chromatographic media. Bacisubin exhibited inhibitory activity on mycelial growth in Magnaporthe grisease, Sclerotinia sclerotiorum, Rhizoctonia solani, Alternaria oleracea, A. brassicae and Botrytis cinerea. The IC50 values of its antifungal activity toward the last four fungal species were 4.01 mu M, 0.087 mu M, 0.055 mu M and 2.74 mu M, respectively. Bacisubin demonstrated neither protease activity, nor protease inhibitory activity. However, it manifested ribonuclease and hemagglutinating activities. (c) 2006 Elsevier Inc. All rights reserved.

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