相关实验视频
Updated: Jan 22, 2026

08:11
Quantitative Analysis of Chromatin Proteomes in Disease
Published on: December 28, 2012
13.6K
中红外光谱仪用于对小麦蛋白质组进行定性和定量分析
Dedy L Nadeak1, Michael Wiederstein1, Sabine Baumgartner1
1Department of Agricultural Sciences, Institute of Bioanalytics and Agro-Metabomics, BOKU University, 3430 Tulln an der Donau, Austria.
Analytical chemistry
|January 21, 2026
概括
减弱总反射中红外光谱 (ATR-MIR) 揭示了小麦蛋白的二次结构. 这种方法为小麦蛋白质组分析提供了新的见解,识别了白蛋白,球蛋白,蛋白和蛋白分数中的不同结构.
科学领域:
- 农业科学 农业科学
- 分析化学 分析化学
- 生物化学 生物化学
背景情况:
- 小麦是全球重要的蛋白质来源,但对其蛋白质分量的详细分析是复杂的.
- 已建立的小麦蛋白分析方法往往缺乏研究二次结构的分辨率.
研究的目的:
- 调查减弱总反射中红外光谱 (ATR-MIR) 分析小麦蛋白二次结构的潜力.
- 描述不同小麦蛋白分量的二次结构组成 (白蛋白,球蛋白,蛋白,谷蛋白).
主要方法:
- 使用减弱总反射中红外光谱法 (ATR-MIR) 来分析小麦蛋白分数.
- 采用差异同步组件分析 (ASCA) 分析来评估光谱变异.
- 量化蛋白质含量使用胺II带.
主要成果:
- ATR-MIR成功地在小麦蛋白分数中区分了二次结构:白蛋白和球蛋白显示出高α-螺旋含量,而基素和谷蛋白显示出显著的β-转结构.
- ASCA发现采样地点和小麦品种对MIR光谱有显著影响 (p < 0.001).
- 蛋白质含量量定量还显示了采样地点和分数 (p < 0.001) 的显著差异,每个分数的特定度范围.
结论:
- ATR-MIR是一种强大的技术,用于阐明小麦蛋白的二次结构和组成.
- 这项研究强调了环境和遗传因素对小麦蛋白质形状的影响.
- 通过ATR-MIR,可以显示出对小麦蛋白质组综合分析的巨大潜力.
相关概念视频
Qualitative Analysis
23.8K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
For instance, group IV...
23.8K
Qualitative Analysis
1.3K
Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
There are two main approaches to qualitative analysis:...
There are two main approaches to qualitative analysis:...
1.3K
Infrared (IR) Spectroscopy: Overview
4.7K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
Different compounds display unique properties due to their...
4.7K
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview
1.2K
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
The ATR process begins by directing a beam...
1.2K
Quantitative Analysis
1.3K
Quantitative analysis is a technique for measuring the amount of specific constituents in a sample. When the sample's composition is unknown, qualitative analysis is performed first to identify its components, which ensures that the correct substances are measured during the quantitative phase.
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the...
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the...
1.3K
Proteomics
9.4K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
9.4K

