在蛋白质家族中,能量连接的进化保存路径
1Howard Hughes Medical Institute and Department of Pharmacology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75235-9050, USA.
概括
一种新方法使用进化数据来绘制蛋白质能量相互作用的地图,揭示出意想不到的远程合. 这些发现证实了统计能源函数的存在.
科学领域:
- 蛋白质结构和功能分析分析.
- 计算生物学和生物信息学
- 生物物理学和分子相互作用
背景情况:
- 了解蛋白质内部的能量相互作用对于预测功能和稳定性至关重要.
- 识别合的氨基酸位置可以阐明全性机制和结合部位动态.
研究的目的:
- 开发和验证一种新的计算技术,利用进化数据绘制蛋白质中的能量相互作用.
- 调查PDZ域蛋白家族内的能量合的性质和程度.
主要方法:
- 利用来自蛋白质家族的进化数据来计算氨基酸位置之间的统计相互作用.
- 开发了一个统计能量函数来预测能量合的残留物.
- 进行突变研究以实验验证计算预测.
主要成果:
- 该分析成功地预测了PDZ域结合位点残留的能量合位置,包括以前未被识别的远程相互作用.
- 实验性突变研究证实了预测的准确性,验证了统计能量函数作为热力学合的可靠指标.
- 在整个蛋白质折叠中确定了相互作用残留物的连接通路.
结论:
- 开发的统计能量函数准确地预测了蛋白质中的热力学合.
- 长距离的能量相互作用在蛋白质的结构和功能中起着重要作用.
- 相互作用的残留物网络可以促进蛋白质内的高效能量转移.
相关概念视频
Protein Families
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 locations, protein...
Conservation of Protein Domains Over Different Proteins
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 form...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Protein Families
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 locations, protein...
Conservation of Protein Domains
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 form...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...


