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3篇 您的检索式:作者名="Xujing Lin"
    题名 作者 年代 出处 被引量
1Development of highly glyphosate-tolerant tobacco by coexpression of glyphosate acetyltransferase gat and EPSPS G2-aroA genes显示文摘The widely used herbicide glyphosate targets 5-enolpyruvylshikimate-3-phosphate synthase(EPSPS).Glyphosate acetyltransferase(GAT)effectively detoxifies glyphosate by N-acetylation.With the aim of identifying a new strategy for development of glyphosate-tolerant crops,the plant expression vector pG2-GAT harboring gat and G2-aroA(encoding EPSPS)has been transformed into tobacco(Nicotiana tabacum)to develop novel plants with higher tolerance to glyphosate.Results from Southern and Western blotting analyses indicated that the target genes were integrated into tobacco chromosomes and expressed effectively at the protein level.Glyphosate tolerance was compared among transgenic tobacco plants containing gat,G2-aroA,or both genes.Plants containing both gat and G2-aroA genes were the most glyphosate-tolerant.This study has shown that a combination of different strategies may result in higher tolerance in transgenic crops,providing a new approach for development of glyphosate-tolerant crops.Baoqing Dun Xujing Wang Wei Lu Ming Chen Wei Zhang Shuzhen Ping Zhixing Wang Baoming Zhang Min Lin 2014The Crop Journal2014,2,Z1:4
2Kinetic Investigation of a Cucurbit[7]uril-Based Pseudo[6]rotaxane System by Microfluidic Nuclear Magnetic Resonance显示文摘It is challenging to investigate fast supramolecular processes due to the lack of appropriate characterization methods with high structural resolution.In this study,microfluidic nuclear magnetic resonance(μFNMR)spectroscopy was employed to monitor the kinetics of threading and dethreading of a pseudo[6]rotaxane system.By employing high time resolutionμF-NMR,1 H and two-dimensional(2D)rotating frame nuclear Overhauser effect spectroscopy(ROESY)NMR spectra were recorded at any time point within 1.5 s after the onset of the process.This technique enabled the successful identification of kinetic intermediates and rate-determining steps,usually impossible to determine by other spectroscopic techniques.Thus,our study demonstrates the capability ofμF-NMR in investigating the mechanism of complex supramolecular systems.Yibin Sun Hongxun Fang Xujing Lin Xiuxiu Wang Ganyu Chen Xinchang Wang Zhongqun Tian Liulin Yang Marcel Utz Xiaoyu Cao 2022CCS Chemistry2022,4,2:0
3Reconstruction of enzymatic activity from split genes encoding glyphosate-tolerant EPSPS protein of Psedomonas fluorescens G2 strain by intein mediated protein complementation显示文摘A mutagenesis library was constructed using GPS-LS system to insert a random 5 aa into the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) encoded by aroA gene. Active EPSPS pro- teins were identified by the ability to rescue growth of aroA-deleted mutant ER2799 on M9 minimal media. 12 unique sites, which can tolerate a 5-aa insertion, were identified. In all of the 12 sites, only F295/T296 site was found to split the G2-EPSPS properly by co-transformation of plasmids into E. coli ER2799. The G2-EPSPS gene was then divided into N-termi- nal and C-terminal from F295/T296 site which were fused to the N-terminal and C-terminal of Ssp.DnaE intein, respectively, creating two plasmids pMEPS- N295IN and pKEPSc296Ic. Co-transformation of plasmids, pMEPSN295IN and pKEPSc296Ic, rescu- ed growth of ER2799 in M9 minimal media, indicating that the intein splicing domains were bringing the EPSPS fragments together to generate activity. Re- consituted activity of splitted G2-EPSPS enzyme was 4.48 U/mg.DUN Baoqing LU Wei ZHANG Wei PING Shuzhen WANG Xujing CHEN Ming XU Yuquan JIN Dan WANG Jin ZHAO Zhonglin LIANG Aimin HOU Songna XU Ming-Qun LIN Min 2006Chinese Science Bulletin2006,51,13:0
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