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Related Concept Videos

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...
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...
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...
Rapid Identification of Pathogens01:25

Rapid Identification of Pathogens

MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...
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

Software platform for rapidly creating computational tools for mass spectrometry-based proteomics.

Damon May1, Wendy Law, Matt Fitzgibbon

  • 1Molecular Diagnostics Program, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA.

Journal of Proteome Research
|March 25, 2009
PubMed
Summary
This summary is machine-generated.

The msInspect software provides an open-source proteomics computational toolkit for developing proteomics applications. This toolkit accelerates the creation of new computational tools for mass spectrometry data analysis.

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Area of Science:

  • Proteomics
  • Computational Biology
  • Bioinformatics

Background:

  • Mass spectrometry (MS) is crucial for proteomics.
  • Developing custom computational tools for MS data analysis can be time-consuming.
  • A need exists for accessible and efficient software solutions in proteomics research.

Purpose of the Study:

  • To introduce and demonstrate the msInspect proteomics computational toolkit.
  • To showcase the toolkit's utility in rapidly developing new proteomics software applications.
  • To present Qurate as an example application for curating quantitative proteomics data.

Main Methods:

  • The toolkit includes modules in Java and R for software development.
  • It offers tools for processing LC-MS data and MS/MS search results.
  • Functionality includes data structure modeling and visualization.

Main Results:

  • The msInspect toolkit facilitates the rapid development of proteomics software.
  • An example application, Qurate, demonstrates manual curation of quantitative peptide events.
  • The toolkit supports common tasks in proteomics data analysis.

Conclusions:

  • The msInspect toolkit is a valuable open-source resource for the proteomics community.
  • It enables efficient development and application of computational tools for MS data.
  • This toolkit can accelerate discoveries in quantitative proteomics.