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Related Concept Videos

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.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...
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...
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...
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...
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...

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Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification
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Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification

Published on: November 15, 2017

Quantitative mass spectrometry-based proteomics: an overview.

Miroslav Nikolov1, Carla Schmidt, Henning Urlaub

  • 1Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|June 6, 2012
PubMed
Summary
This summary is machine-generated.

Quantitative mass spectrometry is advancing protein research. This review surveys methods for measuring peptides, proteins, and proteomes, highlighting strategies, challenges, and pitfalls in this evolving field.

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Area of Science:

  • Proteomics
  • Analytical Chemistry
  • Biochemistry

Background:

  • Mass spectrometry is increasingly central to protein research.
  • Qualitative analysis is established, shifting focus to quantitative methods.
  • Accurate protein and peptide quantification is crucial for biological insights.

Purpose of the Study:

  • To review current quantitative mass spectrometry methods for peptides, proteins, and proteomes.
  • To discuss strategies, common themes, and differences in quantitative approaches.
  • To identify potential pitfalls and challenges in mass spectrometry-based proteomics.

Main Methods:

  • Review of existing literature on quantitative mass spectrometry techniques.
  • Comparative analysis of different quantitative strategies (e.g., label-based, label-free).
  • Discussion of data analysis and validation challenges.

Main Results:

  • Overview of diverse quantitative mass spectrometry approaches.
  • Identification of key challenges including reproducibility and dynamic range.
  • Comparison of method suitability for different proteomic scales.

Conclusions:

  • Quantitative mass spectrometry is a rapidly developing field with significant potential.
  • Careful method selection and validation are essential for reliable proteomic quantification.
  • Further advancements are needed to address current limitations and enhance throughput.