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Related Concept Videos

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...
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...
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...
Mass Spectrometry: Molecular Fragmentation Overview01:20

Mass Spectrometry: Molecular Fragmentation Overview

The ionization of a molecule into a molecular ion inside the mass spectrometer causes instability in the molecule's structure due to the loss of an electron. This eventually leads to the fragmentation or breaking of some bonds in the molecule. The fragmentation occurs predominantly at specific bonds to yield relatively stable fragments.
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...
Mass Spectrometers01:16

Mass Spectrometers

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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Navigating the Mass Spectrometry-Based Proteomic Data Using Free Computational Tools
07:01

Navigating the Mass Spectrometry-Based Proteomic Data Using Free Computational Tools

Published on: August 19, 2025

An efficient data format for mass spectrometry-based proteomics.

Anuj R Shah1, Jennifer Davidson, Matthew E Monroe

  • 1Fundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.

Journal of the American Society for Mass Spectrometry
|August 3, 2010
PubMed
Summary
This summary is machine-generated.

A new database-principle format for mass spectrometry (MS) data offers improved storage, processing, and retrieval. This standardized approach addresses limitations of existing XML formats, enhancing proteomics data management and exchange.

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Area of Science:

  • Proteomics
  • Analytical Chemistry
  • Bioinformatics

Background:

  • Mass spectrometry (MS) data requires standardized formats for efficient management and exchange.
  • Existing XML-based formats for MS data present inefficiencies, particularly for large numeric datasets.
  • Previous alternative data exchange strategies have not gained traction due to performance and extensibility issues.

Purpose of the Study:

  • To introduce a novel data format for mass spectrometry.
  • To overcome the limitations of current XML-based standards in proteomics data handling.
  • To provide a more efficient and extensible solution for managing, processing, and exchanging MS data.

Main Methods:

  • Development of a data format based on standard database principles.
  • Evaluation of the format's performance against existing standards.
  • Assessment of extensibility for multidimensional separation systems.

Main Results:

  • The proposed format demonstrates significant benefits in storage size.
  • Improved ease of processing and faster data retrieval times were observed.
  • The format is extensible to accommodate complex multidimensional separation systems.

Conclusions:

  • A database-principle format offers a superior alternative for mass spectrometry data representation.
  • This new standard enhances the management, processing, storage, visualization, and exchange of proteomics data.
  • The format addresses key community needs for efficiency, robustness, and extensibility in MS data handling.