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人偏肺病毒融合蛋白N-糖基化位点的预测及不同N-糖基化修饰突变体的构建 被引量:2
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作者 谢琴芳 赵晓东 +3 位作者 张琴 黄路 毛华伟 赵耀 《实用儿科临床杂志》 CAS CSCD 北大核心 2009年第22期1714-1716,1745,共4页
目的预测人偏肺病毒(hMPV)融合蛋白N-糖基化位点,构建N-糖基化修饰突变体。方法NetNGlyc1.0 Server神经网络软件预测hMPV4个亚型代表株F蛋白氨基酸序列的N-糖基化位点;根据预测结果针对性地设计突变引物,应用基因工程技术进行定点突变,... 目的预测人偏肺病毒(hMPV)融合蛋白N-糖基化位点,构建N-糖基化修饰突变体。方法NetNGlyc1.0 Server神经网络软件预测hMPV4个亚型代表株F蛋白氨基酸序列的N-糖基化位点;根据预测结果针对性地设计突变引物,应用基因工程技术进行定点突变,从而获得特定位点去糖基化的F基因,包括单位点突变体、双位点突变体及三位点突变体;双酶切鉴定、基因序列分析重组质粒,明确N-糖基化修饰突变体构建是否成功。结果hMPV4个亚型代表株F蛋白氨基酸序列从N端起第57、172、353位均存在可能性大于50%的N-糖基化位点。构建hMPVF蛋白7个不同的N-糖基化修饰突变体,并通过序列分析测定证实重组突变质粒构建成功。结论hMPVF蛋白的N-糖基化位点保守,不同亚型的代表株有相同的糖基化位点,利用定点突变技术成功构建了糖基化突变体重组质粒。 展开更多
关键词 人偏肺病毒 融合蛋白 n.糖基化位点 重组突变质粒
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Cloning and Bioinformatics Analysis of ZmERECTA-LIKE1 and Construction of Plant Expression Vector
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作者 Yihong JI Jinbao PAN +3 位作者 Min LU Jun HAN Zhangjie NAN Qingpeng SUN 《Agricultural Science & Technology》 CAS 2016年第3期523-525,共3页
[Objective] This study was conducted to clone and analyze ERECTA-LIKE1 gene in Zea mays by PCR and bioinformatics methods and to construct plant expression vector p Cambia3301-zm ERECTA-LIKE1. [Method] zm ERECTA-LIKE1... [Objective] This study was conducted to clone and analyze ERECTA-LIKE1 gene in Zea mays by PCR and bioinformatics methods and to construct plant expression vector p Cambia3301-zm ERECTA-LIKE1. [Method] zm ERECTA-LIKE1(zm ERL1)gene was obtained using RT-PCR, and physical-chemical properties were analyzed by bioinformatics methods, including domains,transmembrane regions, N-Glycosylation potential sites phosphorylation sites, and etc. [Result] Bioinformatics results showed that zm ERL1 gene was 2 169 bp, which encoded a protein consisting of 722 amino acids, 11 N-glycosylation potential sites and 42 kinase specific phosphorylation sites. According to CDD2.23 and TMHMM Server v. 2.0 software, there were leucine-rich repeats,a PKC domain and a transmembrane region in this protein. The theoretical p I and molecular weight of zm ERL1 encoded protein was 6.20 and 79 184.8 using Compute PI/Mw tool. Furthermore, we constructed the plant expression vector p Cambia3301-zm ERECTA-LIKE1 by subcloning zm ERL1 gene into p Cambia3301 instead of GUS. [Conclusion] The results provide a theoretical basis for the application of zm ERL1 gene in future study. 展开更多
关键词 Zea mays BIOInFORMATICS Plant expression vector
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