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用遗传密码扩展进行蛋白质工程的化托方生物合成

Yiming Guo¹, Linqi Cheng¹, Yu Hu¹

¹Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas, 77005, U.S.A.

Chembiochem : a European journal of chemical biology

|July 3, 2024

概括

这项研究开发了自主细胞,通过遗传密码扩展生物合成化三衍生物,用于蛋白质工程. 这克服了昂贵的外部氨基酸来源的局限性,使精确的蛋白质调制成为可能.

科学领域:

生物化学生物化学
合成生物学合成生物学
分子生物学分子生物学

背景情况:

遗传代码扩展 (GCE) 允许精确地将非正规氨基酸 (ncAA) 纳入蛋白质.
目前的GCE方法受到昂贵和难以合成的ncAAs的限制.

研究的目的:

开发用于生物合成化三衍生物的自主细胞.
通过GCE利用这些衍生物进行蛋白质工程,克服外部ncAA的限制.

主要方法:

使用廉价的化盐和各种化酶来选择性生物合成化三酸盐 (6-,7-,6-,7-).
采用生物对等的氨基酸-tRNA合成酶/tRNA对,通过珀色子抑制将这些衍生物纳入特定蛋白质位点.
优化表达系统,用于生产含有化托残留物的稳健蛋白质.

主要成果:

成功实现了四种不同的化二衍生物的选择性生物合成.
证明这些衍生物在自主细胞内的指定的位置被有效地纳入蛋白质.
经验证的强健蛋白质表达含有生物合成的化托残留物.

结论:

建立了一个多功能平台,用于工程蛋白质与多种化托残留物.
这种方法大大降低了与GCE相关的成本和复杂性.
铺平了新型蛋白质设计的道路,具有调节的结构和功能.

关键词:

生物合成生物合成遗传密码扩展遗传密码扩展原酶是一种基酶.基三甲是基三甲的一种.非规范性氨基酸的氨基酸.蛋白质工程是一种蛋白质工程.

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