Search research articles

お問い合わせ

JoVEについて

概要リーダーシップブログ JoVEヘルプセンター

著者向け

出版プロセス編集委員会範囲と方針査読よくある質問投稿

図書館員向け

推薦の声購読アクセスリソース図書館諮問委員会よくある質問

研究

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments アーカイブ

教育

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual 教員リソースセンター教員サイト

プライバシーポリシー

関連する概念動画

Electrochemical Systems

Electrochemical Systems

Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...

Electrochemical Gradient and Channel Proteins: An Overview

Electrochemical Gradient and Channel Proteins: An Overview

An electrochemical gradient is a fundamental concept in biology and chemistry. It regulates the movement of ions across cell membranes. This movement is influenced by two factors:
The electrical gradient: The electrical gradient across cell membranes refers to the difference in electric charge between the inside and outside of a cell. This difference drives the movement of ions towards or away from the cells. For instance, if the inside of the cell is more negatively charged relative to the...

Lampbrush Chromosomes

Lampbrush Chromosomes

In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops resemble the...

Channel Rhodopsins

Channel Rhodopsins

Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...

Chemotaxis in E. coli

Chemotaxis in E. coli

Chemotaxis in Escherichia coli is a sensory-driven motility mechanism that enables bacteria to navigate chemical gradients, moving toward beneficial environments while avoiding harmful conditions. This process relies on a signal transduction system integrating external chemical cues with flagellar motor control.Chemoreceptors and Signal DetectionE. coli detects chemical gradients through methyl-accepting chemotaxis proteins (MCPs), which are membrane-bound chemoreceptors that sense attractants...

The Electrical Double Layer

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え

Same author

Erratum: "Anisotropic coarse-grain Monte Carlo simulations of lysozyme, lactoferrin, and NISTmAb by precomputing atomistic models" [J. Chem. Phys. 161, 094113 (2024)].

The Journal of chemical physics·2026

Same author

From Intermolecular Poses to Thermodynamics Using Subdivided Spheres.

The journal of physical chemistry. B·2026

Same author

HemoDens: A global hemostasis analyzer for kinetic characterization of clot formation, retraction, and lysis.

Thrombosis research·2025

Same author

Evaluation of MRX PT DOAC as a new screening method for detecting interferences in thrombophilia analyses.

Scandinavian journal of clinical and laboratory investigation·2025

Same author

Enhanced diffusion through multivalency.

Soft matter·2024

Same author

Strong electrostatic attraction drives milk heteroprotein complex coacervation.

International journal of biological macromolecules·2024

Same journal

Switching Site Selectivity in Alkoxyamine Hydration: From Lone-Pair Direction to Solvent Network Dominance.

Journal of the American Chemical Society·2026

Same journal

A Topotactic Leap: 2D Layers to 3D Large-Pore Zeolite.

Journal of the American Chemical Society·2026

Same journal

Enhanced Hydrogen Evolution over Single-Atom Catalysts via Electrostatic Polarization in Contact-electro-catalysis.

Journal of the American Chemical Society·2026

Same journal

Tumor Acidity-Activatable Ionizable Lipid Nanoparticles for Selective Oncolytic Therapy.

Journal of the American Chemical Society·2026

Same journal

Alternating Magnetic Field Promotes Ammonia Cracking by Disrupting the Sabatier Limitation of Ruthenium Catalytic Species.

Journal of the American Chemical Society·2026

Same journal

Bulk Ferromagnetic Icosahedral Quasicrystals without Rapid Quenching.

Journal of the American Chemical Society·2026

関連記事をすべて見る

Search research articles

関連する実験動画

Updated: Jun 6, 2026

Designing Microfluidic Devices for Studying Cellular Responses Under Single or Coexisting Chemical/Electrical/Shear Stress Stimuli

Designing Microfluidic Devices for Studying Cellular Responses Under Single or Coexisting Chemical/Electrical/Shear Stress Stimuli

Published on: August 13, 2016

生物学的システムにおける静電カメレオン

¹Department of Theoretical Chemistry, Lund University, POB 124, SE-22100 Lund, Sweden. mikael.lund@teokem.lu.se

Journal of the American Chemical Society

|November 20, 2010

まとめ

この要約は機械生成です。

オートホスファートやヒスティジンのような有電離子は,静電的近接スイッチとして作用し,インターフェースの近くでの電荷を調節します. この負荷調節メカニズムは,生物学的および技術的なプロセスにとって極めて重要です.

さらに関連する動画

Observation of Photobehavior in Chlamydomonas reinhardtii

Observation of Photobehavior in Chlamydomonas reinhardtii

Published on: May 6, 2022

Whole-cell Patch-clamp Recordings for Electrophysiological Determination of Ion Selectivity in Channelrhodopsins

Whole-cell Patch-clamp Recordings for Electrophysiological Determination of Ion Selectivity in Channelrhodopsins

Published on: May 22, 2017

関連する実験動画

Last Updated: Jun 6, 2026

Designing Microfluidic Devices for Studying Cellular Responses Under Single or Coexisting Chemical/Electrical/Shear Stress Stimuli

Designing Microfluidic Devices for Studying Cellular Responses Under Single or Coexisting Chemical/Electrical/Shear Stress Stimuli

Published on: August 13, 2016

Observation of Photobehavior in Chlamydomonas reinhardtii

Observation of Photobehavior in Chlamydomonas reinhardtii

Published on: May 6, 2022

Whole-cell Patch-clamp Recordings for Electrophysiological Determination of Ion Selectivity in Channelrhodopsins

Whole-cell Patch-clamp Recordings for Electrophysiological Determination of Ion Selectivity in Channelrhodopsins

Published on: May 22, 2017

科学分野:

バイオフィジックス生物物理学
物理化学物理化学について
コンピュータ生物学コンピュータ生物学

背景:

陽子は,生理的なpHで重要な均衡の変動を示します.
オートホスファートやヒスティジンのイミダゾール群のようなイオンの電荷は,その環境に対して敏感である.
充電されたインターフェースとの相互作用は,生物学的システムにおいて根本的なものです.

研究の目的:

充電されたインターフェースの近くのイオンの電荷調節機構を定量化するために.
電子静的近接スイッチとしてのイオンの役割を調査する.
この料金規則の生物学的および技術的な関連性を調査する.

主な方法:

理論的定量化のための統計熱力学.
相互作用をモデル化するためのメソスコピックコンピューターシミュレーション.
モデルインターフェース (例えば,脂質膜,DNA) 近くのイオン行動の分析.

主要な成果:

オートホスファートやヒスティジンのようなイオンは,充電されたインターフェースの近さに基づいて,その電荷を動的に調節する.
この電荷調節器は,電気静的近接スイッチとして機能し,相互作用の強さを調節します.
このメカニズムは,様々な生物学的および技術的な文脈において有意であることが示されました.

結論:

イオンによる電荷調節は,生物学的および人工的なインターフェースとの相互作用を制御する重要なメカニズムです.
この現象は,分子認識,細胞プロセス,そして新しい材料の設計を理解するための広範な意味を持つ.
静電近接スイッチモデルは,これらの相互作用を研究するための枠組みを提供します.