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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...
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...
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...
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 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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Large-scale Top-down Proteomics Using Capillary Zone Electrophoresis Tandem Mass Spectrometry
10:05

Large-scale Top-down Proteomics Using Capillary Zone Electrophoresis Tandem Mass Spectrometry

Published on: October 24, 2018

What does the future hold for Top Down mass spectrometry?

Benjamin A Garcia1

  • 1Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA. bagarcia@princeton.edu

Journal of the American Society for Mass Spectrometry
|November 28, 2009
PubMed
Summary

Top Down mass spectrometry, analyzing intact proteins, is rapidly advancing. While Bottom Up mass spectrometry currently dominates high-throughput studies, Top Down methods show promise for future proteome analysis.

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Isolation of Histone from Sorghum Leaf Tissue for Top Down Mass Spectrometry Profiling of Potential Epigenetic Markers
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Area of Science:

  • Proteomics and Mass Spectrometry
  • Biological and Biomedical Research

Background:

  • Mass spectrometry (MS) is pivotal in modern biological and biomedical research.
  • Bottom Up mass spectrometry, involving proteolysis before MS, is the dominant high-throughput method.
  • Advances in electron capture and transfer dissociation have spurred growth in Top Down (intact proteins) and Middle Down (large polypeptides) MS.

Purpose of the Study:

  • To evaluate the potential of Top Down mass spectrometry to compete with Bottom Up approaches for large-scale proteomic studies.
  • To discuss the current state, applications, challenges, and future outlook of high-throughput Top Down MS.

Main Methods:

  • Review of current Top Down mass spectrometry methodologies and technological developments.
  • Analysis of applications and limitations of high-throughput Top Down MS.
  • Exploration of emerging trends and future prospects in the field.

Main Results:

  • Bottom Up MS remains the leader for high-throughput proteomic studies.
  • Top Down and Middle Down MS are experiencing significant development and increased usage due to new dissociation techniques.
  • The competitive viability of Top Down MS for whole proteome analysis is under active investigation.

Conclusions:

  • Top Down mass spectrometry technology continues to evolve, presenting a potential future alternative for comprehensive proteome analysis.
  • Further advancements are needed for Top Down MS to fully rival Bottom Up approaches in high-throughput applications.
  • The trajectory suggests increasing relevance of Top Down MS in large-scale biological and biomedical research.