相关实验视频

Updated: Jun 24, 2025

Author Spotlight: Exploring Heat Shock Proteins in Malaria and Tuberculosis Infections

Author Spotlight: Exploring Heat Shock Proteins in Malaria and Tuberculosis Infections

Published on: March 8, 2024

来自Pseudoalteromonas haloplanktis的心理伴侣素的低温特征

Eva Hertle¹, Astrid Ursinus¹, Jörg Martin²

¹Department of Protein Evolution, Max Planck Institute for Biology, Max-Planck-Ring 5, 72076, Tübingen, Germany.

Archives of microbiology

|June 11, 2024

概括

喜欢寒冷的细菌中的Chaperonin,比如Pseudoalteromonas haloplanktis chaperonin 60 (Ph Cpn60),保留了它们的双环结构. 这种结构,加上ATPase活性降低,有助于高效的蛋白质在低温下折叠.

科学领域:

生物化学生化学
分子生物学分子生物学
结构生物学结构生物学

背景情况:

沙佩罗宁是参与蛋白质折叠的基本分子沙佩罗宁.
心理友好型细菌经常表现出对寒冷环境的独特适应性.
以前,人们认为来自适应寒冷的细菌的沙佩罗宁具有单环结构.

研究的目的:

为了研究来自心理爱好者Pseudoalteromonas haloplanktis (Ph) 的Chaperonin 60 (Cpn60) 的结构和功能.
为了确定Ph Cpn60在寒冷条件下是否保持双环结构.
评估Ph Cpn60.0的ATPase活性和蛋白质折叠辅助能力.

主要方法:

Ph Cpn60.0. 的结构分析.
生化分析测量ATPase活性.
在体外蛋白质折叠实验.
在大肠杆菌中 Ph Cpn60 的重组表达.

主要成果:

Cpn60即使在低温下也保持了双环结构.
降低的ATPase活性允许节能休眠状态,由客户端蛋白质结合激活.
Ph Cpn60,与同伴chaperonin Ph Cpn10,有效地协助蛋白质折叠到55°C.
重组Ph Cpn60增强了在寒冷生长条件下大肠杆菌的生存能力.

结论:

Ph Cpn60的双环结构在寒冷环境中是一个稳定的特征.
Ph Cpn60表现出对其功能至关重要的调节ATPase活动.
这种伴侣素是折叠和稳定心理友好蛋白质的有希望的工具.

关键词:

这样,ATP酶就会产生ATP.查佩罗尼尼的作用格罗埃尔 (GroEL) 是一个古老的城市.蛋白质折叠过程中的蛋白质折叠心理爱好者心理爱好者

更多相关视频

Detection of the pH-dependent Activity of Escherichia coli Chaperone HdeB In Vitro and In Vivo

Detection of the pH-dependent Activity of Escherichia coli Chaperone HdeB In Vitro and In Vivo

Published on: October 23, 2016

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution

Published on: June 14, 2024

相关概念视频

Molecular Chaperones and Protein Folding

Molecular Chaperones and Protein Folding

The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...

¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR

¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR

The axial and equatorial protons in cyclohexane can be distinguished by performing a variable-temperature NMR experiment. In this process, except for one proton, the remaining eleven protons are replaced by deuterium. The deuterium substitution avoids the possible peak splitting caused by the spin-spin coupling between the adjacent protons. The remaining proton flips between the axial and equatorial positions.

Membrane Fluidity

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.