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Related Concept Videos

Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

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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...
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Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

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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...
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Mass Spectrometry: Overview01:19

Mass Spectrometry: Overview

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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 electrospray 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...
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MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

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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...
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Mass Spectrometers01:16

Mass Spectrometers

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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:
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Mass Spectrometry: Isotope Effect01:13

Mass Spectrometry: Isotope Effect

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Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of a molecule is different depending on the specific isotope of its elements involved. As a result, the mass spectrum of the molecule exhibits peaks from the same fragment at multiple positions. The positions of these mass signals depend on the difference between the molecular mass. Furthermore, the intensity of these signals is dependent on the...
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Resolving Affinity Purified Protein Complexes by Blue Native PAGE and Protein Correlation Profiling
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Special Issue "Protein Analysis by Mass Spectrometry".

Simone König1

  • 1IZKF Core Unit Proteomics, Interdisciplinary Center for Clinical Research, University of Münster, Röntgenstr. 21, 48149 Münster, Germany.

Molecules (Basel, Switzerland)
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Summary

This special issue focuses on protein analysis using mass spectrometry. It highlights the latest advancements and challenges in this rapidly evolving field of proteomics.

Area of Science:

  • Biochemistry and Molecular Biology
  • Analytical Chemistry
  • Proteomics

Background:

  • The field of protein analysis by mass spectrometry is vast and rapidly advancing.
  • This special issue aims to consolidate recent developments and key methodologies.
  • Guest editors faced a challenge due to the extensive existing literature.

Discussion:

  • Explores cutting-edge techniques in protein identification and quantification.
  • Addresses challenges in data analysis and interpretation for complex proteomic samples.
  • Highlights the interdisciplinary nature of modern protein analysis.

Key Insights:

  • Summarizes novel approaches in mass spectrometry-based proteomics.
  • Provides a curated collection of high-impact research in protein analysis.

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  • Emphasizes the growing importance of mass spectrometry in biological research.

    • Outlook:

    • Foresees continued innovation in mass spectrometry instrumentation and applications.
    • Predicts deeper insights into biological systems through advanced protein analysis.
    • Suggests future directions for the field of proteomics.