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相关概念视频

Protein Organization01:24

Protein Organization

6.5K
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....
6.5K
Protein and Protein Structures02:15

Protein and Protein Structures

10.5K
10.5K
Protein and Protein Structure02:15

Protein and Protein Structure

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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
79.6K
Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

10.9K
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...
10.9K
Protein Families02:47

Protein Families

15.3K
Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism.   Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members.   If these new proteins contain similar amino acids in key...
15.3K
RNA Structure01:19

RNA Structure

4.8K
The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
4.8K

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相关实验视频

Updated: Jul 6, 2025

A Protocol for Computer-Based Protein Structure and Function Prediction
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A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

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使用监督变压器蛋白语言模型预测单个序列蛋白质结构.

Wenkai Wang1, Zhenling Peng2, Jianyi Yang3

  • 1School of Mathematical Sciences, Nankai University, Tianjin, China.

Nature computational science
|January 4, 2024
PubMed
概括
此摘要是机器生成的。

trRosettaX-Single是一个新的算法,用于从单个序列中预测蛋白质结构. 它比AlphaFold2更快,使用更少的资源,显示出对蛋白质设计和突变分析的希望.

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The ITS2 Database
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Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
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Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues

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相关实验视频

Last Updated: Jul 6, 2025

A Protocol for Computer-Based Protein Structure and Function Prediction
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A Protocol for Computer-Based Protein Structure and Function Prediction

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The ITS2 Database
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The ITS2 Database

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Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
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科学领域:

  • 计算生物学是一种计算生物学.
  • 结构生物学是结构生物学.
  • 生物信息学是一种生物信息学.

背景情况:

  • 预测蛋白质结构对于理解蛋白质功能至关重要.
  • 像AlphaFold2这样的深度学习方法具有先进的预测能力,但在单个序列输入方面遇到了困难.
  • 准确预测孤儿和设计蛋白质仍然是一个挑战.

研究的目的:

  • 开发一种用于单序蛋白质结构预测的自动化算法.
  • 为了提高蛋白质结构预测的效率和资源利用.
  • 探索蛋白质设计和误解突变分析中的应用.

主要方法:

  • 来自监督变压器蛋白语言模型的嵌入式序列嵌入.
  • 利用了通过知识蒸增强的多尺度网络,用于2D几何预测.
  • 使用能源最小化重建3D结构.
  • 与AlphaFold2和RoseTTAFold进行基准测试.

主要成果:

  • 在孤儿蛋白质上,trRosettaX-Single的表现优于AlphaFold2和RoseTTAFold.
  • 在人类设计的蛋白质上获得了0.79的平均模板建模得分 (TM-score).
  • 该管道比AlphaFold2快2倍,使用<10%的计算资源.
  • 为2000个设计蛋白质生成了高可靠性模型,并证明了错误的突变分析.

结论:

  • trRosettaX-Single为单个序列蛋白质结构预测提供了一种高效和有效的方法.
  • 该算法显示了在蛋白质设计和相关研究中应用的巨大潜力.
  • 它为分析突变和理解蛋白质行为提供了有价值的工具.