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利用硫结合域来分离基酸寡核酸的 Sp 和 Rp 异构体

Fulin Ge¹, Yuli Wang¹, Jinling Liu¹

¹State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, People's Republic of China.

Applied microbiology and biotechnology

|August 27, 2024

概括

一种新的方法,即固定硫结合域 (SPOIS),有效地分离基基酸核酸 (PS-ONs) 的Rp和Sp二聚体,克服了这些异构体的当前染色学技术的局限性.

科学领域:

生物化学生化学
化学生物学化学生物学
橄核酸的化学成分

背景情况:

基酸核酸 (PS-ONs) 的化学合成产生Rp和Sp二聚体.
这些异构体表现出不同的反应性,使其应用复杂化.
目前用于PS-ON异构体分离的染色学方法正在得到改进,但往往导致共.

研究的目的:

开发一种通用和高效的系统,用于分离酸寡核酸同位素.
克服现有的染色分离方法对PS-ON二聚体的局限性.

主要方法:

在磁珠 (SPOIS) 上使用固定硫结合域 (SBD) 的分离系统的开发.
使用SBDs专门识别酸酸DNA和RNA的RP配置.
将His标记的SBD固定在Ni-NTA磁珠上,以创建用于绑定RP异构体的珠子/SBD复合体.

主要成果:

SPOIS成功地分离了PS-ON二聚体 (450nt) 的二聚体,RP异体的产量为6090%.
在HPLC中与高产量 (84%Rp,89%Sp) 共同化的分离异体.
通过多个酸修饰和应用到DNAzyme基质证明了立体异构体的分离.

结论:

SPOIS提供了一种可扩展和高效的方法,用于分离酸寡核酸同位素.
这种系统克服了HPLC遇到的共同脱离问题,使高纯度同位素的隔离成为可能.
开发的SPOIS技术为需要纯立体化学PS-ONs的应用提供了一种多功能工具.

关键词:

基于亲密关系的Oligo净化微生物DNA结合蛋白质是微生物DNA的结合蛋白质.基酸寡核酸的使用蛋白质-DNA相互作用硫结合域是一个硫结合域.热可移蛋白质是一种热可移蛋白质.

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