相关实验视频

Updated: May 10, 2025

A New Screening Method for the Directed Evolution of Thermostable Bacteriolytic Enzymes

A New Screening Method for the Directed Evolution of Thermostable Bacteriolytic Enzymes

Published on: November 7, 2012

条件为产生热友蛋白序列的神经网络可以增加热稳定性

Evan Komp¹, Christian Phillips², Lauren M Lee³

¹Chemical Engineering, University of Washington, Seattle, WA, USA. komp.evan@gmail.com.

Scientific reports

|April 23, 2025

概括

研究人员开发了通过杆翻译 (NOMELT) 实现的化温度神经优化,以设计热稳定蛋白质. 这种新的方法使用神经机器翻译来预测和排名蛋白质的热稳定性,在设计的蛋白质变体中显示出显著的改进.

科学领域:

蛋白质工程是一种蛋白质工程.
计算生物学是一种计算生物学.
生物技术是生物技术.

背景情况:

设计具有增强热稳定的蛋白质对于各种生物技术应用至关重要.
现有的方法往往需要大量的数据或同质信息,限制了它们的范围.
了解生物体温度适应和蛋白质热友性之间的关系是关键.

研究的目的:

推出NOMELT,一种基于神经机器翻译的新方法,用于设计和排序高温稳定的蛋白质.
为了证明NOMELT在预测和增强蛋白质化温度方面的能力.
探索利用生物生长温度来设计蛋白质的潜力.

主要方法:

训练一个神经机器翻译模型 (NOMELT) 在400多万个来自适应不同温度的生物的蛋白质同类对上.
应用NOMELT来设计和实验验证Drosophila melanogasterEngrailed Homeodomain的一个变体.
评估NOMELT的零射击预测能力,以对蛋白质家族的实验融化和半激活温度进行排名.

主要成果:

一种被设计的Drosophila melanogaster Engrailed Homeodomain的变体显示化温度增加了15.5K.
诺梅尔特证明了对排名蛋白质热稳定性指标的零射击预测能力.
该模型成功地学习了热友性,将其与一般的自然变异区分开来,而不需要大量的数据集.

结论:

诺梅尔特为热稳定蛋白质的合理设计提供了一种有前途的方法.
利用生物体生长温度是依赖环境的蛋白质工程的一个有效策略.
该方法有可能加速用于高温应用的蛋白质的开发.

更多相关视频

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

Published on: December 18, 2013

Differential Scanning Calorimetry — A Method for Assessing the Thermal Stability and Conformation of Protein Antigen

Differential Scanning Calorimetry — A Method for Assessing the Thermal Stability and Conformation of Protein Antigen

Published on: March 4, 2017

相关概念视频

Protein Denaturation

Protein Denaturation

The function of proteins depends on their native three-dimensional structure, which is dictated by the amino acid sequence of the specific protein. Folding of the polypeptide chain takes place under specific conditions that energetically favor the folded conformation. In contrast, protein denaturation occurs spontaneously under unfavorable conditions that disrupt the integrity of the folded conformation. Thus, the chemical and physical environment of a protein, such as significant changes in pH...

Protein Folding

Protein Folding

Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...