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Related Concept Videos

Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

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...
Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

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...
MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

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...
Proteomics01:33

Proteomics

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.
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Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

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...
Mass Spectrometry: Overview01:19

Mass Spectrometry: Overview

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...

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Navigating the Mass Spectrometry-Based Proteomic Data Using Free Computational Tools
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Mass spectrometry based proteomics, background, status and future needs.

Peter Roepstorff1

  • 1Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, DK 5230, Odense M, Denmark. roe@bmb.sdu.dk

Protein & Cell
|August 29, 2012
PubMed
Summary

This study reviews proteomics strategies, comparing 2D-gel and LC-MS methods. It highlights challenges and solutions for deeper proteome analysis, including organelle enrichment and specific peptide isolation.

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Area of Science:

  • Proteomics
  • Biochemistry
  • Analytical Chemistry

Background:

  • Proteomics is a rapidly evolving field.
  • Understanding protein expression is crucial in biology.

Purpose of the Study:

  • To provide an overview of proteomics.
  • To describe current strategies and their limitations.
  • To discuss future needs in the field.

Main Methods:

  • Review of 2D-gel based and LC-MS based proteomics.
  • Description of combined strategies like CeLC-MS.
  • Discussion of organelle enrichment and peptide isolation techniques.

Main Results:

  • Comparison of advantages and limitations of major proteomics strategies.
  • Demonstration of solved challenges in proteome analysis.
  • Identification of key techniques for deeper proteome exploration.

Conclusions:

  • Current proteomics strategies offer powerful tools for biological research.
  • Further advancements are needed to fully explore the proteome.
  • Combined approaches and specialized techniques enhance proteomic insights.