SymProFold:对称生物组件的结构预测
Christoph Buhlheller1,2, Theo Sagmeister1, Christoph Grininger1
1Institute of Molecular Biosciences, University of Graz, Graz, Austria.
Nature communications
|September 18, 2024
概括
使用AlphaFold-Multimer,SymProFold可以预测如细菌S层和病毒囊等对称的蛋白质组合. 这种计算工具有助于理解蛋白质功能和设计新应用.
科学领域:
- 结构生物学是结构生物学.
- 计算生物学是一种计算生物学.
- 生物物理学的生物物理.
背景情况:
- 对称的蛋白质组合,如细菌细胞表面层 (S层),对于细胞功能至关重要,包括粘附和免疫逃避.
- 这些自组装结构的实验性表征是困难的,因为固有的特性和序列多样性.
- 了解这些蛋白质阵列的对称性是解读它们的生物学作用的关键.
研究的目的:
- 介绍SymProFold管道,用于预测对称的蛋白质组合.
- 为了利用AlphaFold-Multimer预测来导出2D S层数组和球形病毒囊.
- 通过实验数据和晶体结构来验证预测的对称性.
主要方法:
- 利用AlphaFold-Multimer进行高精度的蛋白质结构预测.
- 开发了SymProFold管道来测试和识别已知的对称性运算 (p1,p2,p3,p4,p6).
- 用现有的蜂数据和通过晶体结构确认的接口验证的计算模型.
主要成果:
- SymProFold成功地预测了对称的蛋白质组合,包括S层阵列和病毒囊.
- 管道准确地确定给定蛋白质序列的最可能的对称性.
- 实验验证证了多个组件预测的对称性和接口.
结论:
- 该SymProFold管道提供了一个强大的方法来确定对称蛋白质组件的结构.
- 该工具促进了蛋白质功能的探索,并使得有针对性的应用程序的设计成为可能.
- 通过对称蛋白质结构的研究,为纳米技术,生物技术,医学和材料科学开辟了新的途径.
相关概念视频
Structural Protein Function
27.5K
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
27.5K
Protein Folding
117.6K
Overview
117.6K
Assembly of Cytoskeletal Filaments
18.5K
Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
18.5K
Amyloid Fibrils
9.3K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.3K
Protein Complex Assembly
10.6K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
10.6K
Assembly of Complex Microtubule Structures
1.8K
Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
1.8K


