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関連する概念動画

Ionic Crystal Structures02:42

Ionic Crystal Structures

17.7K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.7K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

31.0K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
31.0K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.6K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
48.6K
Energy Basics02:27

Energy Basics

47.9K
Chemical reactions, such as those that occur when you light a match, involve changes in energy as well as matter.
47.9K
What is Energy?04:10

What is Energy?

59.6K
The universe is composed of matter in different forms, and all forms of matter contain energy.  The different forms of energy on Earth originate from the Sun — the ultimate energy source. Plants capture light energy from the Sun, and, via the process of photosynthesis, convert it into chemical energy. This stored energy from plants can be harnessed in many ways. For example, eating plant products as food provides energy for our body to function, and burning wood or coal (fossilized...
59.6K
Free Energy01:21

Free Energy

52.3K
Free energy—abbreviated as G for the scientist Gibbs who discovered it—is a measurement of useful energy that can be extracted from a reaction to do work. It is the energy in a chemical reaction that is available after entropy is accounted for. Reactions that take in energy are considered endergonic and reactions that release energy are exergonic. Plants carry out endergonic reactions by taking in sunlight and carbon dioxide to produce glucose and oxygen. Animals, in turn, break...
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Crystallizing Membrane Proteins for Structure Determination using Lipidic Mesophases
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ボルツ-ABFE:結晶構造のない自由エネルギーの乱れ

Stephan Thaler1,2, Zhiyi Wu2, William G Glass2

  • 1Valence Laboratories, 6666 Rue Saint-Urbain 100, Montréal QC H2S 3H1, Canada.

Journal of chemical theory and computation
|February 12, 2026
PubMed
まとめ
この要約は機械生成です。

自由エネルギー干渉 (FEP) シミュレーションでは,実験構造なしで結合親和度を推定することができます. 新しいBoltz-ABFEパイプラインは,より迅速な薬剤発見のために,予測されたタンパク質-リガンド複合体を使用しています.

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Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
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From Constructs to Crystals – Towards Structure Determination of β-barrel Outer Membrane Proteins
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From Constructs to Crystals – Towards Structure Determination of β-barrel Outer Membrane Proteins
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科学分野:

  • 計算化学はコンピュータ化学である.
  • ドラッグ・ディスカバリー・ドラッグ・ディスカバリー
  • 構造生物学 構造生物学とは

背景:

  • 自由エネルギー干渉 (FEP) は,結合親和度推定のためのゴールドスタンダードです.
  • FEPの精度は,精密なタンパク質-リガンド複合体の構造に依存し,薬剤発見の初期に実験的に入手できないことが多い.
  • 既存の方法は,実験的な結晶構造の必要性によって制限されています.

研究 の 目的:

  • 実験的な結晶構造なしで絶対結合自由エネルギー (ABFE) を推定するための堅牢なパイプライン (Boltz-ABFE) を開発する.
  • FEPシミュレーションのための予測されたタンパク質-リガンド複合体の構造の有用性を評価する.
  • 薬剤発見の初期段階における構造に基づく親和感推定を可能にするために.

主な方法:

  • ボルツ-2構造予測モデルの統合と絶対的なFEPプロトコル.
  • 分子ダイナミクスシミュレーションのための予測された構造を精製するための自動化された方法の開発.
  • FEP+ベンチマークセットから4つのタンパク質ターゲットを用いて,ボルツ-ABFEパイプラインの検証.

主要な成果:

  • Boltz-2は,FEPに適したタンパク質-リガンド複合体の構造を成功裏に予測しています.
  • 自動化された構造精錬は,シミュレーションのための予測モデルの品質を向上させます.
  • ボルツ-ABFEパイプラインは,実験的構造のない複数のタンパク質ターゲットのABFEを正確に推定します.

結論:

  • ボルツ-ABFEは,予測された構造を用いたFEPシミュレーションの実行可能性を示しています.
  • このアプローチは,薬剤開発におけるFEPの適用範囲を大幅に拡大します.
  • Boltz-ABFEは,正確な構造ベースの結合親和度推定を通じて,早期の薬剤発見を加速します.