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HXMS: a standardized file format for HX-MS data.

Kyle C Weber1, Chenlin Lu1, Roberto Vera Alvarez2

  • 1Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, United States.

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Summary
This summary is machine-generated.

A new file format, HXMS, and a Python package, PFLink, standardize hydrogen/deuterium exchange-mass spectrometry (HX-MS) data. This enables more quantitative analysis and data sharing for protein conformational studies.

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Area of Science:

  • Biochemistry
  • Structural Biology
  • Computational Biology

Background:

  • Hydrogen/deuterium exchange-mass spectrometry (HX-MS) is crucial for studying protein conformational ensembles.
  • Current HX-MS data analysis is inconsistent due to diverse software and non-standardized formats.
  • Existing formats often use mean deuteration, losing valuable isotopic information.

Purpose of the Study:

  • To introduce a unified, scalable, and human-readable file format (HXMS) for HX-MS data.
  • To develop a Python package (PFLink) for converting existing HX-MS data to the new format.
  • To enhance quantitative analysis, data sharing, and future applications like machine learning in HX-MS.

Main Methods:

  • Developed the HXMS file format, inspired by protein structure and genomics standards.
  • Created PFLink, a Python package to convert data from common HX-MS software to HXMS.
  • Ensured HXMS preserves isotopic mass envelopes, time-course data, and experimental details.

Main Results:

  • The HXMS format supports full isotopic envelopes, time-course data, PTMs, and replicates.
  • PFLink facilitates seamless conversion of data from various HX-MS software.
  • The combined tools enable higher-resolution quantitative analysis and improved data management.

Conclusions:

  • The HXMS format and PFLink package address critical standardization needs in HX-MS.
  • These tools will advance quantitative analysis, data sharing, and computational approaches in the field.
  • Promotes broader adoption and further development of HX-MS techniques.