Recombinant production of the antimicrobial peptide NZ17074 in Pichia pastoris using SUMO3 as a fusion partner
文献类型: 外文期刊
第一作者: Wang, X. J.
作者: Wang, X. J.;Wang, X. M.;Teng, D.;Zhang, Y.;Mao, R. Y.;Wang, J. H.;Wang, X. J.;Wang, X. M.;Teng, D.;Zhang, Y.;Mao, R. Y.;Wang, J. H.
作者机构:
关键词: antimicrobial activity;antimicrobial peptide;NZ17074;Pichia pastoris;recombinant expression;SUMO3
期刊名称:LETTERS IN APPLIED MICROBIOLOGY ( 影响因子:2.858; 五年影响因子:2.776 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The antimicrobial peptide NZ17074, which is derived from arenicin-3 isolated from Arenicola marina, displayed high activity against a broad range of pathogenic bacteria and fungi. However, NZ17074 has not been produced using fermentation technology. The aim of this work was to study the expression of difficult-to-express NZ17074 in Pichia pastoris by fusing with SUMO3. The DNA fragments of NZ17074 and SUMO3 were fused into SUMO3-NZ17074 using overlap PCR and cloned into the pPICZA vector to construct the pPICZ-SUMO3-NZ17074 expression vector. The rSUMO3-NZ17074 fusion protein, purified by Ni2+-chelating affinity chromatography, was cleaved by 50% formic acid at 50 degrees C for 28h to release recombinant NZ17074 (rNZ17074). After purification with second affinity column, 4 center dot 1mg rNZ17074 peptide with the purity over 90% was obtained from per litre fermentation culture. The rNZ17074 peptide exhibited the significant inhibition activity against Gram-negative bacteria: its minimal inhibitory concentrations (MICs) against Escherichia coli, Salmonella enteritidis and Pseudomonas aeruginosa were 2-4, 2 and 8-16gml-1, respectively, which indicated that SUMO3 is a good fusion partner for the expression of the toxic peptide
分类号: Q939
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