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Probing biopolymer conformation by metallization with noble metals

机译:用贵金属金属化探测生物聚合物的构象

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We propose a novel method for the simple visual (colorimetric) and spectroscopic monitoring of the conformational state of a biopolymer. We present an experimental example of the detection of the change in the conformation of a giant DNA molecule. This methodology is based on the difference in the manner of metallization with noble metals on a polymer scaffold depending on its conformation. Spectroscopic analysis of the metallization of DNA by metallic silver or gold provides information on the critical concentration of DNA binder, at which the folding transition from the elongated into the compact state occurs, together with the dimension and morphology of a compact DNA condensate. This method may be suitable for use in a rapid screening procedure for the high-throughput analysis of large chemical libraries to evaluate their ability to induce DNA compaction, protein folding and similar important processes.
机译:我们提出了一种简单的视觉(比色法)和光谱监控生物聚合物构象状态的新颖方法。我们提出了一个巨大的DNA分子的构象变化检测的实验示例。该方法基于聚合物构架上贵金属与贵金属的金属化方式的不同,具体取决于其构象。金属银或金对DNA的金属化的光谱分析提供了有关DNA结合剂临界浓度的信息,在临界浓度下会发生从细长状态到紧密状态的折叠过渡,以及紧密DNA冷凝物的尺寸和形态。此方法可能适合用于大型化学文库的高通量分析的快速筛选程序,以评估其诱导DNA压缩,蛋白质折叠和类似重要过程的能力。

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