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Open AccessJournal ArticleDOI

A software toolkit and interface for performing stable isotope labeling and top3 quantification using Progenesis LC-MS.

TLDR
A Java programming interface is developed that can use the output files produced by Progenesis, allowing the basic MS features quantified across replicates to be used in a range of different experimental methods.
Abstract
Numerous software packages exist to provide support for quantifying peptides and proteins from mass spectrometry (MS) data. However, many support only a subset of experimental methods or instrument types, meaning that laboratories often have to use multiple software packages. The Progenesis LC-MS software package from Nonlinear Dynamics is a software solution for label-free quantitation. However, many laboratories using Progenesis also wish to employ stable isotope-based methods that are not natively supported in Progenesis. We have developed a Java programming interface that can use the output files produced by Progenesis, allowing the basic MS features quantified across replicates to be used in a range of different experimental methods. We have developed post-processing software (the Progenesis Post-Processor) to embed Progenesis in the analysis of stable isotope labeling data and top3 pseudo-absolute quantitation. We have also created export ability to the new data standard, mzQuantML, produced by the Proteomics Standards Initiative to facilitate the development and standardization process. The software is provided to users with a simple graphical user interface for accessing the different features. The underlying programming interface may also be used by Java developers to develop other routines for analyzing data produced by Progenesis.

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Citations
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Journal ArticleDOI

Label-free quantification in ion mobility-enhanced data-independent acquisition proteomics.

TL;DR: A detailed protocol for a label-free quantitative proteomics workflow based on ion mobility–enhanced DIA, which synchronizes precursor ion drift times with collision energies to improve precursor fragmentation efficiency.
Journal ArticleDOI

Critical assessment of proteome-wide label-free absolute abundance estimation strategies.

TL;DR: Five popular low‐cost and easily implemented quantification methods are evaluated and it is shown that only the Top3 method is directly proportional to protein abundance over the full quantification range and is the preferred method in the absence of reference protein measurements.
Journal ArticleDOI

Quantitative proteomics in the field of microbiology.

TL;DR: This review will focus on the vast range of techniques practically applied in current research with an introduction of the workflows used for quantitative comparisons, a description of the advantages/disadvantages of the various methods, reference to hallmark publications and presentation of applications in current microbial research.
References
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Journal ArticleDOI

MaxQuant enables high peptide identification rates, individualized p.p.b.-range mass accuracies and proteome-wide protein quantification.

TL;DR: MaxQuant, an integrated suite of algorithms specifically developed for high-resolution, quantitative MS data, detects peaks, isotope clusters and stable amino acid isotope–labeled (SILAC) peptide pairs as three-dimensional objects in m/z, elution time and signal intensity space and achieves mass accuracy in the p.p.b. range.
Journal ArticleDOI

Stable isotope labeling by amino acids in cell culture, SILAC, as a simple and accurate approach to expression proteomics.

TL;DR: SILAC is a simple, inexpensive, and accurate procedure that can be used as a quantitative proteomic approach in any cell culture system and is applied to the relative quantitation of changes in protein expression during the process of muscle cell differentiation.
Journal ArticleDOI

Quantitative analysis of complex protein mixtures using isotope-coded affinity tags

TL;DR: An approach for the accurate quantification and concurrent sequence identification of the individual proteins within complex mixtures based on isotope-coded affinity tags and tandem mass spectrometry is described.
Journal ArticleDOI

Multiplexed Protein Quantitation in Saccharomyces cerevisiae Using Amine-reactive Isobaric Tagging Reagents

TL;DR: It is found that inactivation of Upf1p and Xrn1p causes common as well as unique effects on protein expression, and the use of 4-fold multiplexing to enable relative protein measurements simultaneously with determination of absolute levels of a target protein using synthetic isobaric peptide standards.
Journal ArticleDOI

Absolute Quantification of Proteins by LCMSE A Virtue of Parallel ms Acquisition

TL;DR: A new method of absolute quantification of proteins is described, based on the discovery of an unexpected relationship between MS signal response and protein concentration, which is constant within a coefficient of variation of less than ±10%.
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