[1]彭思露,杨慧林,李尔汉,等.蛇足石杉内生真菌Shiraia sp. Slf14中III型聚酮合酶的表达、纯化及生物信息学分析[J].江西师范大学学报(自然科学版),2015,(04):430-434.
 PENG Silu,YANG Huilin,LI Erhan,et al.The Prokaryotic Expression,Purification and Bioinformatics of Type III Polyketide Synthase from Shiraia sp. Slf14, Which Is an Endophytic Fungus of Huperzia serrata[J].Journal of Jiangxi Normal University:Natural Science Edition,2015,(04):430-434.
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蛇足石杉内生真菌Shiraia sp. Slf14中III型聚酮合酶的表达、纯化及生物信息学分析()
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《江西师范大学学报》(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2015年04期
页码:
430-434
栏目:
出版日期:
2015-07-01

文章信息/Info

Title:
The Prokaryotic Expression,Purification and Bioinformatics of Type III Polyketide Synthase from Shiraia sp. Slf14, Which Is an Endophytic Fungus of Huperzia serrata
作者:
彭思露;杨慧林;李尔汉;王筱兰;朱笃
江西师范大学生命科学学院,江西省亚热带植物资源保护与利用重点实验室,江西 南昌 330022;江西师范大学生命科学学院,江西省亚热带植物资源保护与利用重点实验室,江西 南昌 330022; 江西科技师范大学生命科学学院,江西省有机功能分子重点实验室,江西 南昌 330013
Author(s):
PENG Silu;YANG Huilin;LI Erhan;WANG Xiaolan;ZHU Du
关键词:
内生真菌聚酮合酶竹红菌素基因克隆和表达
Keywords:
endophytic funguspolyketide synthasehypocrellincloning and expression
分类号:
Q979.85
文献标志码:
A
摘要:
竹红菌素是我国特有的一类苝醌类光敏色素,在开发新型抗肿瘤抗病毒药物、光敏活性农药及新型光电转换材料等方面应用前景广阔.聚酮合酶( Polyketide synthase,PKS)是合成竹红菌素的一种关键酶,通过全基因组测序及分析发现在Shiraia sp. Slf14中存在一个III型聚酮合酶基因.利用RT-PCR技术,以其总RNA为模板,扩增得到目的片段,并成功构建表达载体pET-22b(+)-PKSIII,采用Ni-NTA亲和层析法纯化目的蛋白,在大肠杆菌BL21( DE3)中成功表达出了目的蛋白,SDS-PAGE结果显示表达重组产物分子质量约为43 kDa,与理论值一致,为III型聚酮合酶的催化活性研究提供理论依据.
Abstract:
The hypocrellins are a unique class of perylenequinones characterized by a pentacyclic conjugated chro-mophore giving rise to photoactivity. One type III PKS gene was obtained from Shiraia sp. Slf14,which is the key synthase in the product process of the hypocrellin. The total RNA as the template to amplify the type III PKS frag-ment was used and then was cloned into pMDTM19-T vector. After identify,type III PKS gene was ligated into pET-22b( +)to obtain recombinant expressing vector pET-22b( +)-PKSIII. The expression vector into Escherichia coli BL21(DE3)and cultured positive colonies of E. coli in liquid LB medium were introduced. Then the objective pro-tein were obtained and isolated for purification using a Ni-NTA affinity chromatography. It can lay the foundation for the catalytic activity of type III polyketide synthase.

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备注/Memo

备注/Memo:
国家自然科学基金(31460021);江西省青年科学基金(20142BAB214008);江西省教育厅基金(GJJ13211);江西省亚热带植物资源保护与利用重点实验室开放基金(YRD201408)
更新日期/Last Update: 1900-01-01