在体外和细胞自组装一个Zn结合蛋白密码和通过模板化二硫化物键
Annette Medina-Morales1, Alfredo Perez, Jeffrey D Brodin
1Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0356, USA.
Journal of the American Chemical Society
|August 3, 2013
概括
工程蛋白相互作用指导二硫化物键的形成,产生一种类似于密码的复合物 ((C81/C96) RIDC14) 用于金属结合. 这种自我组装的蛋白质复合体有效地在大肠杆菌细胞内结合了Zn (II).
科学领域:
- 生物化学 生物化学
- 超分子化学 超分子化学
- 蛋白质工程是指蛋白质的工程.
背景情况:
- 由于它们的强度和可逆性,二硫化物键对于生物和合成组装至关重要.
- 超分子化学原理可以应用于工程蛋白质组装.
研究的目的:
- 设计和表征一种由工程非共价相互作用模拟的新型蛋白质复合体.
- 研究工程蛋白质复合物的自我组装和金属结合能力.
主要方法:
- 在单质蛋白表面上设计非共价相互作用.
- 引导选择性二硫化物键形成以创建类似密码的结构 ((C81/C96) RIDC14).
- 在大肠杆菌的周等离子体空间表达和分析蛋白质复合物.
主要成果:
- 通过多重二硫化键,成功地模板组装了一个独特的密码类蛋白质复合体 ((C81/C96) RIDC14).
- 该综合体展示了一个预先组织的内部空洞,适合金属协调.
- 在大肠杆菌中观察到高保真性自我组装和Zn (II) 结合.
结论:
- 工程非共价相互作用可以通过受控的二硫化键形成有效地模板蛋白质组合.
- 由此产生的 (C81/C96) RIDC14复合体是一个强大的金属协调平台,在合成生物学中具有潜在的应用.
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