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IMTBX + Grppr: Toolset for Top-Down IM-MS

IMTBX + Grppr is a data processing toolkit for ion mobility mass spectrometry data.

Application: Top-Down, direct infusion

The image below is a screenshot from the included data viewer. 500 spectra averaged (the background 2D map image), raw peak detection by IMTBX (not displayed in this view), grouping peaks into isotopic clusterswith Grppr (purple series of arrows overlaid on top of 2D map).

Detected isotopic clusters overlaid on top of 2d map of averaged scan

Application: Bottom-Up, LCMS ESI data

The movie below was made with the included data viewer. Data from Waters Synapt G2, typical proteomics bottom-up LC/MS run with electrospray ionization. IMTBX signal detection in LC-IM-MS data:

After signal processing and peak detection

Raw unprocessed data from the instrument, LC-IM-MS:

Raw unprocessed data LC-IM-MS

Graphical User Interface

To simplify running the software suite, we provide a GUI to start both programs.

The GUI for running IMTBX and Grppr

Supported data formats

It currently only fully supports data from Waters' ion mobility equipped instruments (.raw directories). However, if you have data that you think is similar and want to try it out, please leave a ticket in the issue tracker.

!!! info "Original Manuscript" Dmitry M. Avtonomov, Daniel A Polasky, Brandon T. Ruotolo, and Alexey I. Nesvizhskii. "IMTBX and Grppr: Software for Top-Down Proteomics Utilizing Ion Mobility-Mass Spectrometry", Analytical Chemistry, 2018.