相关实验视频
Updated: Aug 6, 2026
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Deep Learning-Based Segmentation of Cryo-Electron Tomograms
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单序深度学习提供了共价K-Ras G12热点综合体的晶质模型
bioRxiv : the preprint server for biology
|September 26, 2025
概括
Chai-1准确地预测了共价蛋白-连接体结构,加速了药物发现. 这个工具有效地模拟复杂的相互作用,没有多个序列对齐,超过现有的方法.
科学领域:
- 计算化学是一种计算化学.
- 结构生物学是结构生物学.
- 药物发现 药物发现
背景情况:
- 基于结构的药物设计依赖于耗时的实验方法.
- 预测共价药物标复合体至关重要,但具有挑战性.
研究的目的:
- 评价 Chai-1,一个结构预测工具,用于模拟共价蛋白质-连接体复合体.
- 评估与现有方法相比,Chai-1的准确性和效率.
主要方法:
- 利用Chai-1来预测与各种抑制剂复合的K-Ras (G12C) 的结构.
- 在Chai-1中使用共价键束用于特定的共价相互作用.
- 将Chai-1的预测与实验数据和AlphaFold3.3进行了比较.
主要成果:
- 在没有多个序列对齐的情况下,Chai-1准确地预测了K-Ras(G12C) 抑制剂姿势 (RMSD < 2 Å).
- 该工具成功模拟了共价K-Ras (G12D/G12S) 抑制剂结合的姿势.
- 柴-1 显示出明显更高的吞吐量比AlphaFold3 具有可比的准确性.
结论:
- 柴-1是一种高效且易于使用的工具,用于预测共价蛋白-连接体结构.
- 它的共价约束模式加速了对具有挑战性的目标的药物发现.
- 进一步开发可能会改善详细化学性质的处理.
相关概念视频
02:38The Ras Gene
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a superfamily...
Ras is a superfamily...
01:24Small GTPases - Ras and Rho
Ras and Rho are small monomeric GTPases that act downstream of receptor tyrosine kinase (RTK) and regulate various cellular processes. These GTPases switch between active and inactive states by binding to guanine nucleotides.
Three regulatory proteins control their activity:
Three regulatory proteins control their activity: