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利用纳米孔进行单分子酶学和蛋白质测序

Harnessing nanopores for single-molecule enzymology and protein sequencing
课程网址: https://videolectures.net/preglov_maglia_harnessing_nanopores/  
主讲教师: Giovanni Maglia
开课单位: Preglov kolokvij会议
开课时间: 2018-09-25
课程语种: 英语
中文简介:
生物纳米孔是一类在脂质膜上形成纳米大小孔隙的膜蛋白。在施加的电势下,通过纳米孔的离子电流用于识别分子或在单分子水平上跟踪反应。纳米孔电流是有利的,因为它们很容易集成到低成本和便携式分析设备中。在这里,我们展示了蛋白质和肽通过纳米孔的运输可以得到精细控制。折叠的蛋白质可以通过利用电泳力被捕获在纳米孔内,而小肽可以通过设计穿过纳米孔的强电渗流来拉伸和展开。使用这些方法,纳米孔可以用作单分子酶学研究的纳米级反应器,或者用作单个蛋白质在纳米孔中迁移时测序的传感器。
课程简介: Biological nanopores are a class of membrane proteins that form nanometer-size apertures on lipid membranes. Under an applied potential the ionic current through nanopores is used to identify molecules or to follow reactions at the single-molecule level. Nanopores current are advantageous because they are easily integrated into low-cost and portable analytical devices. Here we show that the transport of proteins and peptides across nanopores can be finely controlled. Folded proteins can trapped inside nanopores by exploiting electrophoretic forces, while small peptides can be stretched and unfolded by engineering strong electroosmotic flows through the nanopore. Using these approaches, nanopores may be used as nanoscale reactor for single-molecule enzymology studies, or sensors for sequencing individual proteins as they translocate across the nanopore.
关 键 词: 纳米孔; 单分子酶学; 蛋白质
课程来源: 视频讲座网
数据采集: 2024-04-25:liyq
最后编审: 2024-04-25:liyq
阅读次数: 8