Best practices and benchmarks for intact protein analysis for top-down mass spectrometry

Nat Methods. 2019 Jul;16(7):587-594. doi: 10.1038/s41592-019-0457-0. Epub 2019 Jun 27.

Abstract

One gene can give rise to many functionally distinct proteoforms, each of which has a characteristic molecular mass. Top-down mass spectrometry enables the analysis of intact proteins and proteoforms. Here members of the Consortium for Top-Down Proteomics provide a decision tree that guides researchers to robust protocols for mass analysis of intact proteins (antibodies, membrane proteins and others) from mixtures of varying complexity. We also present cross-platform analytical benchmarks using a protein standard sample, to allow users to gauge their proficiency.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Benchmarking*
  • Mass Spectrometry / methods*
  • Protein Denaturation
  • Protein Processing, Post-Translational
  • Proteins / chemistry*
  • Proteomics

Substances

  • Proteins