相关实验视频

Updated: May 30, 2025

Measuring Glucose Uptake in Drosophila Models of TDP-43 Proteinopathy

Measuring Glucose Uptake in Drosophila Models of TDP-43 Proteinopathy

Published on: August 3, 2021

GLUT1葡萄糖载体的致病突变对使用ComDYN增强采样的溶液载体动态的影响

Halima Mouhib^1,2, Akiko Higuchi³, Sanne Abeln⁴

¹Laboratoire Modélisation et Simulation Multi Echelle (MSME) - UMR 8208 CNRS, Université Paris-Est, Champs-sur-Marne, France.

|January 31, 2025

概括

使用ComDYN模拟来研究溶液载体 (SLC) 蛋白质突变,揭示了葡萄糖载体1 (GLUT1) 中的G91D如何通过阻断形状变化来破坏功能,这对于理解载体动态和疾病至关重要.

科学领域:

生物化学和分子生物学
计算生物学计算生物学
遗传学遗传学是一个

背景情况:

溶液载体 (SLC) 蛋白质是细胞功能必不可少的膜载体.
在SLC2亚家族中的致病突变,特别是葡萄糖载体1 (GLUT1),导致各种神经系统疾病,如Glut1缺乏症综合征和.
了解突变诱导的载体动态是阐明疾病机制的关键.

研究的目的:

研究致病性和非致病性突变对溶液载体蛋白质动态的影响.
为了利用一种新的粗粒度模拟方法,ComDYN,用于分析传送器形状变化.
阐明GLUT1.1中特定突变的功能后果.

主要方法:

采用了一种叫做ComDYN (COMmon constraints DYNamics) 的粗粒度模拟方法.
专注于弹性网络的共同约束,以捕捉溶解物载体蛋白质的大型形状变化.
研究GLUT1的致病性和非致病性突变,将ComDYN预测与SIFT和PolyPhen进行比较.

主要成果:

康迪恩模拟有效地捕获了转运器动态上的突变效应.
病原性GLUT1突变G91D被证明可以阻止构造性采样,影响传送器功能.
与SIFT和PolyPhen相比,ComDYN提供了更清晰的突变影响差异化,特别是对于保存的动机.

结论:

康迪恩 (ComDYN) 方法成功解释了GLUT1.1中G91D突变的致病性.
转膜螺旋结构对GLUT1蛋白功能至关重要,这是突变分析表明的.
未来的研究应该纳入连接物效应,如葡萄糖,以充分了解突变对传送机制的影响.

关键词:

GLUT1葡萄糖载体缺陷综合征人类的葡萄糖运输器马蒂尼强力场是马蒂尼的强力场.在 SLC 运输器家族中,在粗粒度模拟中使用粗粒度模拟.增强的采样方法增强的采样方法分子动力学模拟模拟运输机制的运输机制.

更多相关视频

Quantitative Measurement of GLUT4 Translocation to the Plasma Membrane by Flow Cytometry

Quantitative Measurement of GLUT4 Translocation to the Plasma Membrane by Flow Cytometry

Published on: November 7, 2010

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy

Published on: December 7, 2017

相关概念视频

Glucose Transporters

Glucose Transporters

Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:

Secondary Active Transport

Secondary Active Transport

One example of how cells use the energy contained in electrochemical gradients is demonstrated by glucose transport into cells. The ion vital to this process is sodium (Na+), which is typically present in higher concentrations extracellularly than in the cytosol. Such a concentration difference is due, in part, to the action of an enzyme “pump” embedded in the cellular membrane that actively expels Na+ from a cell. Importantly, as this pump contributes to the high concentration of...

Glucose Absorption Into the Small Intestine

Glucose Absorption Into the Small Intestine

Complex carbohydrates consumed cannot be absorbed into the small intestine in their original form. First, they must be hydrolyzed to a monosaccharide form such as glucose or galactose. These monosaccharides are then transported across the intestinal membrane and into the blood via transcellular transport. The intestinal epithelial cells allow the movement of these monosaccharides with a defined 'entry' through membrane transporter proteins present on their apical membrane and...