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福氏志贺菌SF173的过表达、纯化、结晶及初步X射线晶体学分析

Overexpression, purification, crystallization and preliminary X-ray crystallographic analysis of SF173 from Shigella flexneri.

作者信息

Kim Ha-Neul, An Jeong-Gi, Lee Yoo-Sup, Seok Seung-Hyeon, Yoo Hee-Seop, Seo Min-Duk

机构信息

Department of Molecular Science andTechnology, Ajou University, Suwon, Kyeonggi 443-749, Republic of Korea.

College of Pharmacy, Ajou University, Suwon, Kyeonggi 443-749, Republic of Korea.

出版信息

Acta Crystallogr F Struct Biol Commun. 2015 Jan 1;71(Pt 1):54-6. doi: 10.1107/S2053230X14025941.

Abstract

Shigella flexneri is a Gram-negative, anaerobic bacterium in the genus Shigella that can cause diarrhoea in humans. SF173, a hypothetical protein from S. flexneri 5a strain M90T, has been cloned, overexpressed, purified and crystallized as a part of laboratory-scale structural genomics project. The SF173 protein was crystallized using the sitting-drop vapour-diffusion method in the presence of 0.8 M succinic acid pH 7.0 at 293 K. Preliminary X-ray diffraction analysis revealed that the crystal diffracted to 1.47 Å resolution and belonged to space group I432, with unit-cell parameters a=b=c=110.245 Å.

摘要

福氏志贺菌是志贺菌属中的一种革兰氏阴性厌氧菌,可导致人类腹泻。SF173是福氏志贺菌5a菌株M90T中的一种假定蛋白,作为实验室规模结构基因组学项目的一部分,已被克隆、过表达、纯化并结晶。SF173蛋白在293K下,于pH 7.0的0.8 M琥珀酸存在下,采用坐滴气相扩散法结晶。初步X射线衍射分析表明,该晶体的衍射分辨率为1.47 Å,属于空间群I432,晶胞参数a = b = c = 110.245 Å。

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