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Mass Spectrometry: Overview01:19

Mass Spectrometry: Overview

8.1K
Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass spectrometry is to generate ions from the analyte molecule and measure these ion abundances against their molecular mass. One common type of ionization, known as electron ionization or EI, bombards the analyte molecules in the gas phase with high-energy electron beams. The electron beams displace an electron from the molecule and leave behind a...
8.1K
Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

1.5K
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...
1.5K
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

2.2K
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
2.2K
MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

6.4K
Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
6.4K
Mass Spectrum: Interpretation01:24

Mass Spectrum: Interpretation

2.6K
An unknown compound can be established by identifying the molecular ion peak in the mass spectrum. The molecular ion peak is often weak or absent due to the predominance of fragmentation in high-energy electron beams. In such cases, a soft-energy electron beam can be used to scan the spectrum to enhance the intensity of the molecular ion peak. Additionally, chemical ionization, field ionization, and desorption ionization spectra are used to obtain a relatively intense molecular ion peak.To...
2.6K
Mass Spectrometers01:16

Mass Spectrometers

8.2K
This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
8.2K

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Navigating the Mass Spectrometry-Based Proteomic Data Using Free Computational Tools
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計算質量分析法の展望:最近の進歩と主要な課題

Timo Sachsenberg1,2, Lindsay K Pino3, Marie Brunet4

  • 1Department of Computer Science, University of Tübingen, Tübingen, 72074, Germany.

Bioinformatics advances
|December 22, 2025
PubMed
まとめ

計算質量分析法(MS)は分子生物学研究を進歩させている。研究および臨床応用におけるMSベースの技術の潜在能力を最大限に引き出すためには、計算手法への継続的な投資が不可欠である。

キーワード:
計算質量分析法プロテオミクスメタボロミクスマルチオミクス機械学習

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Analyzing Large Protein Complexes by Structural Mass Spectrometry
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Untargeted Metabolomics from Biological Sources Using Ultraperformance Liquid Chromatography-High Resolution Mass Spectrometry UPLC-HRMS
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Untargeted Metabolomics from Biological Sources Using Ultraperformance Liquid Chromatography-High Resolution Mass Spectrometry UPLC-HRMS

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科学分野:

  • 分子生物学
  • 計算生物学
  • バイオテクノロジー

背景:

  • 質量分析法(MS)は、プロテオミクス、メタボロミクス、リピドミクスなどの分野をサポートする分子生物学における基本的な技術です。
  • 計装、データ取得、機械学習、コンピューティングの進歩により、計算質量分析法は変革されています。
  • 計算質量分析法(CompMS)特別関心コミュニティは、協力と革新を促進する上で重要な役割を果たしています。

研究 の 目的:

  • 計算質量分析法における最近の進歩をレビューすること。
  • 主要な課題と将来の方向性を強調すること。
  • 機械学習とコミュニティの理解の重要性を強調すること。

主な方法:

  • MS計装と取得戦略における最近の進歩のレビュー。
  • 計算質量分析法における機械学習の応用の議論。
  • データ調和、統計的信頼性、マルチオミクス統合における課題の分析。

主要な成果:

  • 計算質量分析法は、技術の進歩により急速に進化しています。
  • 主な課題には、データの調和、統計的信頼性、大規模分析、マルチオミクス統合、臨床データのプライバシーが含まれます。
  • 機械学習の重要性が増しており、コミュニティ全体の理解が必要です。

結論:

  • 堅牢で再現性のある計算方法は、MSベースの研究に不可欠です。
  • 基礎研究およびトランスレーショナルリサーチを進歩させるためには、計算質量分析法への継続的な投資が不可欠です。
  • CompMSコミュニティは、進歩と知識交換を推進する上で不可欠です。