使用逆相液态染色学和双重质谱法评估糖的疏水性
Junyao Wang1, Aiying Yu1, Byeong Gwan Cho1
1Department of Chemistry and Biochemistry, Texas Tech University, United States.
Journal of chromatography. A
|July 31, 2023
概括
这项研究引入了一种疏水性指数,以使液体染色学 (LC) 中的保留时间正常化,用于糖分析. 这种方法提高了数据在不同仪器和实验室的可复制性,提高了糖的表征.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 格莱科米克斯 (Glycomics) 是一个有趣的药物.
背景情况:
- 液体染色学 (LC) 中的保留时间对于分析物识别至关重要,但容易在不同的仪器和实验室中发生变化.
- 这些保留时间变化对可靠的糖分析和数据比较构成重大挑战.
- 一种强大的方法来规范保留时间对于推进糖的表征至关重要.
研究的目的:
- 开发和验证一种疏水性指数,以规范由逆相LC (RPLC) 分离的糖的保留时间.
- 评估各种甘氨酸结构对骨的疏水性的影响.
- 为了证明水性指数的可靠性和适用性,用于糖数据的实验室间和仪器间比较.
主要方法:
- 使用逆相液态染色学 (RPLC) 进行糖分离.
- 采用双重质谱法 (MS/MS) 来检测和识别糖.
- 基于标准校准混合物计算的疏水性指数,以使保留时间正常化.
- 从模型糖蛋白和复杂的人类血清样本中评估糖的疏水性.
主要成果:
- 由于水友性甘氨酸结构的存在,观察到酸骨干的疏水性显著降低.
- 水性指数显示出高可靠性和可重复性,在实验室间实验中相对标准偏差 (RSD%) 低,为1.2%,而保留时间为5.1%.
- 该方法成功地将保留时间在不同的仪器和时间点之间进行正常化,验证了其实用性.
结论:
- 疏水性指数提供了一种有效的手段,可以通过RPLC将糖分析中的保留时间变化正常化.
- 这种方法提高了从不同LC系统和实验室获得的糖数据的可比性和可靠性.
- 经过验证的疏水性指数方法提高了对糖的鉴定信心,特别是对于复杂的生物样本,如人体血清.
更多相关视频
08:37The Application of Open Searching-based Approaches for the Identification of Acinetobacter baumannii O-linked Glycopeptides
Published on: November 2, 2021
2.3K
08:56Quantitative Analysis of the Cellular Lipidome of Saccharomyces Cerevisiae Using Liquid Chromatography Coupled with Tandem Mass Spectrometry
Published on: March 8, 2020
7.4K
相关概念视频
01:33Peptide Identification Using Tandem Mass Spectrometry
6.6K
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
6.6K
01:21Mass Spectrometry: Complex Analysis
826
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
826