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Twigged streptavidin polymer as a scaffold for protein assembly

机译:扭曲的链霉亲和素聚合物作为蛋白质组装的支架

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摘要

Protein assemblies are an emerging tool that is finding many biological and bioengineering applications. We here propose a method for the site-specific assembly of proteins on a twigged streptavidin (SA) polymer using streptavidin as a functional scaffold. SA was genetically appended with a G tag (sortase A recognition sequence) and a Y tag (HRP recognition sequence) on its N- and C-termini, respectively, to provide G-SA-Y. G-SA-Y was polymerized using HPR-mediated tyrosine coupling, then fluorescent proteins were immobilized on the polymer by biotin-SA affinity and sortase A-mediated ligation. Fluorescence measurements showed that the proteins were immobilized in close proximity to each other. Hydrolyzing enzymes were also functionally assembled on the G-SA-Y polymer. The site-specific assembly of proteins on twigged SA polymer may find new applications in various biological and bioengineering fields. (C) 2016 Elsevier B.V. All rights reserved.
机译:蛋白质组装是正在发现许多生物学和生物工程应用的新兴工具。我们在这里提出一种方法,使用链霉亲和素作为功能性支架,在树枝状链霉亲和素(SA)聚合物上进行蛋白质的位点特异性组装。 SA在其N末端和C末端分别在遗传上附加有G标签(分选酶A识别序列)和Y标签(HRP识别序列),以提供G-SA-Y。使用HPR介导的酪氨酸偶联使G-SA-Y聚合,然后通过生物素SA亲和力和分选酶A介导的连接将荧光蛋白固定在聚合物上。荧光测量表明,蛋白质彼此紧密地固定在一起。水解酶也功能性地组装在G-SA-Y聚合物上。树枝状SA聚合物上蛋白质的特定位点组装可能会在各种生物和生物工程领域中找到新的应用。 (C)2016 Elsevier B.V.保留所有权利。

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