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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Atomic force microscopy reveals the mechanical design of a modular protein
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Atomic force microscopy reveals the mechanical design of a modular protein

机译:原子力显微镜揭示了模块化蛋白质的机械设计

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摘要

Tandem modular proteins underlie the elasticity of natural adhe- sives, cell adhesion proteins, and muscle proteins. The fundamental unit of elastic proteins is their individually folded modules. Here, we use protein engineering to construct multimodular proteins composed of Ig modules of different mechanical strength. We examine the mechanical properties of the resulting tandem mod- ular proteins by using single protein atomic force microscopy. We show that by combining modules of known mechanical strength, we can generate proteins with novel elastic properties. Our ex- periments reveal the simple mechanical design of modular proteins and open the way for the engineering of elastic proteins with defined mechanical properties, which can be used in tissue and fiber engineering.
机译:串联模块蛋白是天然粘合剂,细胞粘附蛋白和肌肉蛋白的弹性基础。弹性蛋白的基本单位是它们各自折叠的模块。在这里,我们使用蛋白质工程技术来构建由不同机械强度的Ig模块组成的多模块蛋白质。我们通过使用单个蛋白质原子力显微镜检查所得串联模块蛋白质的机械性能。我们表明,通过组合已知机械强度的模块,我们可以生成具有新型弹性特性的蛋白质。我们的实验揭示了模块化蛋白质的简单机械设计,并为具有确定的机械特性的弹性蛋白质工程化开辟了道路,可用于组织和纤维工程中。

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