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Short-distance Transport of Resources02:12

Short-distance Transport of Resources

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Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
17.4K
Carrier Transport01:21

Carrier Transport

899
The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
899
Carrier-Mediated Transport01:06

Carrier-Mediated Transport

1.1K
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
1.1K
ABC Transporters: Exporter01:31

ABC Transporters: Exporter

6.3K
ATP-binding cassette or ABC transporter is the largest superfamily of integral membrane proteins. The transporters have transmembrane-binding domains (TMDs) and nucleotide-binding domains (NBDs). The TMDs are specific to their substrates, whereas the NBDs are similar to engines that complete ATP hydrolysis to complete the substrate transport. They can be full transporters consisting of two TMDs and NBDs, half transporters with one TMD and NBD, while some encoded with a single TMD or NBD are...
6.3K
ABC Transporters: Importer01:27

ABC Transporters: Importer

3.4K
ATP-binding cassette or ABC transporters are a class of ATP-driven pumps that hydrolyze ATP to move solutes across the membrane. They can be grouped into importers and exporters. While exporters are present in all domains of life, importers exist only in bacteria and some plants.
In bacteria, based on the number of transmembrane helices and the chemical nature of their substrates, the ABC importers can be divided into three types:
3.4K
Methods for Studying Drug Absorption: In situ01:09

Methods for Studying Drug Absorption: In situ

624
In situ experiments, such as the Doluisio method and Single-Pass Perfusion technique, provide critical insights into drug uptake by simulating in vivo conditions for drug absorption.
The Doluisio method involves perfusing a prepared segment of a rat's small intestine with a solution of radiolabeled drug and a non-absorbable marker. This helps to differentiate between absorbed and non-absorbed drug concentrations. The intestinal segment is connected at both ends using tubing and syringes,...
624

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Updated: Jan 14, 2026

Cargo Loading onto Kinesin Powered Molecular Shuttles
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Cargo Loading onto Kinesin Powered Molecular Shuttles

Published on: November 3, 2010

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使用RudLOV研究货物运输

Tatsuya Tago1, Takunori Satoh1, Akiko K Satoh1

  • 1Graduate School of Integrated Sciences for Life, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, Japan.

Bio-protocol
|October 27, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了RudLOV,这是一种用于精确控制细胞内货物运输的新型光学方法. 这种技术允许同步释放蛋白质,有助于研究内分泌网膜到戈尔吉器官通路的研究.

关键词:
同焦点显微镜的共聚焦显微镜ERGolgi货物运输货物运输服务提供商细胞内货物运输是细胞内货物运输.现场成像 现场成像 现场成像视觉遗传学 视觉遗传学鲁德洛夫 鲁德洛夫 鲁德洛夫

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相关实验视频

Last Updated: Jan 14, 2026

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科学领域:

  • 细胞生物学 细胞生物学
  • 生物物理学的生物物理.
  • 分子生物学分子生物学

背景情况:

  • 细胞内膜和分泌的蛋白质从内质网膜 (ER) 到戈尔吉装置的细胞内传输对于细胞功能至关重要.
  • 控制这种运输和货物分类的精确机制尚未完全理解.
  • 光学显微镜和同步货物释放方法的进步使得蛋白质运输的直接观察成为可能.

研究的目的:

  • 介绍和详细介绍一种新的光学同步方法来控制细胞内货物释放,称为使用LOV2 (RudLOV) 暗状态的保留.
  • 为了研究细胞内运输,对货物释放进行精确的空间,时间和定量控制.
  • 提供使用RudLOV技术进行细胞内货物运输的高分辨率实时成像的详细协议.

主要方法:

  • 开发RudLOV (使用LOV2的暗状态保持) 方法,用于光学同步的货物释放.
  • 使用照明触发和检测货物运输.
  • 使用特定的激光波长 (445或488纳米) 释放货物,相比紫外线,光损伤减少.
  • 实施一种高分辨率的细胞内蛋白质运输实时成像协议.

主要成果:

  • 鲁德洛夫 (RudLOV) 提供了对货物蛋白质释放的精确空间,时间和定量控制.
  • 该方法允许使用可见光激光 (445或488纳米) 释放货物,最大限度地减少细胞损伤.
  • 鲁德洛夫可以控制货物的挂和释放,而不需要外源化学品.
  • 鲁德洛夫的成功应用促进了细胞内运输动态的高分辨率实时成像.

结论:

  • 鲁德洛夫 (RudLOV) 是一种强大的新工具,用于光学控制和观察细胞内货物运输.
  • 这种方法提高了精度,并减少了蛋白质贩运的实时成像研究中的光损伤.
  • 鲁德洛夫为研究ER-to-Golgi运输和货物分类的复杂机制提供了显著的优势.