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相关概念视频

ATP Driven Pumps II: P-type Pumps01:34

ATP Driven Pumps II: P-type Pumps

The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
ATP Driven Pumps I: An Overview01:27

ATP Driven Pumps I: An Overview

ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and are...
Primary Active Transport01:29

Primary Active Transport

In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they would not...
Primary Active Transport01:47

Primary Active Transport

In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they...
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...

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相关实验视频

Updated: May 10, 2026

Fabrication of a Solution-gated Indium-Tin-Oxide-based One-piece Transistor Enabling Sensitive Biosensing
10:45

Fabrication of a Solution-gated Indium-Tin-Oxide-based One-piece Transistor Enabling Sensitive Biosensing

Published on: August 29, 2025

生物启发的人工单离子

Huacheng Zhang1, Xu Hou, Lu Zeng

  • 1Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China.

Journal of the American Chemical Society
|June 19, 2013
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新的生物灵感离子,使用pH响应的双门纳米通道. 这种人造系统模仿生物离子,为先进的应用程序提供智能离子运输控制.

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Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research
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Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research

Published on: April 18, 2013

相关实验视频

Last Updated: May 10, 2026

Fabrication of a Solution-gated Indium-Tin-Oxide-based One-piece Transistor Enabling Sensitive Biosensing
10:45

Fabrication of a Solution-gated Indium-Tin-Oxide-based One-piece Transistor Enabling Sensitive Biosensing

Published on: August 29, 2025

Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution
11:55

Membrane Transport Processes Analyzed by a Highly Parallel Nanopore Chip System at Single Protein Resolution

Published on: August 16, 2016

Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research
08:03

Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research

Published on: April 18, 2013

科学领域:

  • 纳米技术和材料科学 材料科学
  • 生物启发工程 生物启发工程
  • 物理化学 物理化学

背景情况:

  • 人工功能纳米通道在纳米流体,能量转换和生物传感器方面具有潜力.
  • 复制智能离子运输控制,类似于生物离子,仍然是一个重大挑战.
  • 现有的人工离子通道主要表现出被动运输特性.

研究的目的:

  • 设计和演示一个具有智能离子运输控制的生物灵感的人造离子.
  • 为了实现与生物离子相提并论的活性离子功能,使用一种新的纳米通道设计.
  • 探索智能纳米流体设备和能源转换中的应用.

主要方法:

  • 制造了一种独特的生物灵感单离子,使用合作pH响应双门纳米通道.
  • 使用对称和不对称的pH环境对纳米通道进行刺激,以控制门行为.
  • 在不同的pH条件和度梯度下分析离子运输特征.

主要成果:

  • 在对称的pH刺激下演示了一个交替的门离子过程.
  • 在不对称的pH刺激下,实现了离子转化为离子通道.
  • 在组合的pH刺激下表现出一个安全的离子功能,在度梯度下可重现的过程.

结论:

  • 开发的生物灵感离子成功复制了生物离子的关键离子运输特征.
  • 合作的pH响应双门纳米通道为分子和离子运输提供智能控制.
  • 这项技术对主动运输控制纳米流体设备,能源转换和海水淡化具有前景.