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相关概念视频

Non-equilibrium in the Cell01:16

Non-equilibrium in the Cell

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An important concept in studying metabolism and energy is that of chemical equilibrium. Most chemical reactions are reversible. They can proceed in both directions, releasing energy into their environment in one direction, and absorbing it from the environment in the other direction. The same is true for the chemical reactions involved in cell metabolism, such as the breaking down and building up of proteins into and from individual amino acids, respectively. Reactants within a closed system...
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Catalytically Perfect Enzymes01:07

Catalytically Perfect Enzymes

4.1K
The theory of catalytically perfect enzymes was first proposed by W.J. Albery and J. R. Knowles in 1976. These enzymes catalyze biochemical reactions at high-speed. Their catalytic efficiency values range from 108-109 M-1s-1. These enzymes are also called 'diffusion-controlled' as the only rate-limiting step in the catalysis is that of the substrate diffusion into the active site. Examples include triose phosphate isomerase, fumarase, and superoxide dismutase.
 
Most enzymes...
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Enzymes02:34

Enzymes

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Inside living organisms, enzymes act as catalysts for many biochemical reactions involved in cellular metabolism. The role of enzymes is to reduce the activation energies of biochemical reactions by forming complexes with its substrates. The lowering of activation energies favor an increase in the rates of biochemical reactions.
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...
82.8K
Ribozymes02:47

Ribozymes

12.5K
The term ribozyme is used for RNA that can act as an enzyme. Ribozymes are mainly found in selected viruses, bacteria, plant organelles, and lower eukaryotes. Ribozymes were first discovered in 1982 when Tom Cech’s laboratory observed Group I introns acting as enzymes. This was shortly followed by the discovery of another ribozyme, Ribonulcease P, by Sid Altman’s laboratory. Both Cech and Altman received the Nobel Prize in chemistry in 1989 for their work on ribozymes.
Ribozymes can...
12.5K
Introduction to Enzymes01:22

Introduction to Enzymes

20.0K
The use of enzymes by humans dates to 7000 BCE. Humans first used enzymes to ferment sugars and produce alcohol without knowing that this was an enzyme-catalyzed reaction. Wilhelm Kuhne coined the term 'enzyme' in 1877 from the Greek words ‘en’ meaning ‘in’ or ‘within’ and ‘zyme’ meaning ‘yeast.’
Most enzymes are proteins that speed up biochemical reactions without being consumed. Enzymes contain one or more active sites that...
20.0K
Enzyme Kinetics01:19

Enzyme Kinetics

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Enzymes speed up reactions by lowering the activation energy of the reactants. The speed at which the enzyme turns reactants into products is called the rate of reaction. Several factors impact the rate of reaction, including the number of available reactants. Enzyme kinetics is the study of how an enzyme changes the rate of a reaction.
Scientists typically study enzyme kinetics with a fixed amount of enzyme in the controlled environment of a test tube. When more reactant, or substrate, is...
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相关实验视频

Updated: Sep 17, 2025

Multi-enzyme Screening Using a High-throughput Genetic Enzyme Screening System
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Multi-enzyme Screening Using a High-throughput Genetic Enzyme Screening System

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一个通用的平台,用于人工智能驱动的自主酶工程.

Nilmani Singh1,2, Stephan Lane1,2,3, Tianhao Yu1,3,4

  • 1Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.

Nature communications
|July 2, 2025
PubMed
概括
此摘要是机器生成的。

自主酶工程平台使用人工智能加速蛋白质设计. 这一新系统集成了机器学习和自动化,减少了对人类专业知识的需求,并使生物技术和可持续化学的快速进步成为可能.

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相关实验视频

Last Updated: Sep 17, 2025

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Designing a Bio-responsive Robot from DNA Origami
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科学领域:

  • 生物技术是生物技术.
  • 蛋白质工程是指蛋白质工程.
  • 科学中的人工智能.

背景情况:

  • 蛋白质是重要的分子机器,在能源,健康和可持续性方面具有广泛的应用.
  • 当前的蛋白质工程方法往往是缓慢的,昂贵的,需要专门的知识.
  • 为实际应用开发具有特定功能的新型蛋白质是一个重大挑战.

研究的目的:

  • 开发一个适用于自主酶工程的通用平台.
  • 消除对人类干预,判断和蛋白质工程领域专业知识的需求.
  • 为了证明平台在设计具有增强功能的多种蛋白质方面的能力.

主要方法:

  • 机器学习 (ML) 和大型语言模型 (LLM) 与生物基础自动化集成.
  • 一个只需要输入蛋白序列和可量化的适应性测量的系统.
  • 自主实验周期用于代蛋白质改进.

主要成果:

  • 工程Arabidopsis thaliana化甲基转移酶 (AtHMT),基质偏好增加了90倍,乙基转移酶活性增加了16倍.
  • 开发了一种Yersinia mollaretii植物酶 (YmPhytase) 变体,在中性pH下活性提高了26倍.
  • 在四周的四轮中取得了这些结果,每种酶的特征不到500个变体.

结论:

  • 自主酶工程平台显著加速了功能性蛋白质的开发.
  • 这项技术使蛋白质工程民主化,使其超出专业领域.
  • 该平台有可能在医学,生物技术,可再生能源和可持续化学领域取得快速进展.