一个代的深度学习引导的算法,用于指导蛋白质进化
Xiaofan Li1, Qihan Wang1, Jianfeng Li1
1School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, China.
iScience
|September 10, 2025
概括
DeepDE是一种新的代深度学习算法,通过使用三重突变来增强蛋白质工程. 这种方法显著提高了蛋白质活性,克服了当前深度学习方法的局限性.
科学领域:
- 生物化学 生化学
- 计算生物学 计算生物学
- 蛋白质工程是指蛋白质工程.
背景情况:
- 深度学习对蛋白质优化有希望,但在改善蛋白质活性方面面临局限性.
- 目前的算法往往缺乏严格的代评估,这是蛋白质工程的关键组成部分.
研究的目的:
- 介绍DeepDE,一个代的深度学习指导的蛋白质优化算法.
- 评估DeepDE在增强蛋白质活性方面的有效性,使用专注的库和三重突变.
主要方法:
- 开发了DeepDE,这是一个代的深度学习算法,利用三重突变作为构建块.
- 在一个由大约1000个突变体组成的紧图书馆上训练了算法.
- 应用DeepDE优化来自*Aequorea victoria*的绿色光蛋白 (GFP) 在四轮进化过程中.
主要成果:
- DeepDE实现了GFP活动的74.3倍增长,超过了基准超级文件GFP.
- 使用三重突变使得每次代可以探索更大的序列空间.
- 每轮约有1000个变种的有限选显著改善了DeepDE的性能.
结论:
- DeepDE提供了一种强大且代的蛋白质工程方法,显著提高了蛋白质的活性.
- 该算法通过专注的图书馆选有效地解决了蛋白质工程中的数据稀疏性挑战.
- 这种以深度学习为指导的策略是对蛋白质优化的传统方法的有希望的进步.
相关概念视频
Conservation of Protein Domains Over Different Proteins
14.1K
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
14.1K
Directing Proteins to the Rough Endoplasmic Reticulum
17.1K
The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
17.1K
Gene Evolution - Fast or Slow?
8.0K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
8.0K
Gene Evolution - Fast or Slow?
3.4K
3.4K
Conservation of Protein Domains
4.0K
4.0K
Evolutionary Relationships through Genome Comparisons
6.9K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
6.9K


