Sample Preparation for Mass-Spectrometry Based Absolute Protein Quantification in Antibiotic Stress Research

Methods Mol Biol. 2017:1520:281-289. doi: 10.1007/978-1-4939-6634-9_17.

Abstract

Absolute protein quantification is an essential tool for system biology approaches and elucidation of stoichiometry of multi-protein complexes. In this chapter, a universal protocol for gel free absolute protein quantification in bacterial systems is described, which can be used for sample preparation prior to miscellaneous mass-spectrometry-based quantification workflows like AQUA, Hi3, and emPAI. In addition, a focus has been set to the specific challenges in antibiotic stress research.

Keywords: AQUA; Absolute protein quantification; Antibiotic stress response; Gel free proteomics; Hi3; In-solution digestion; QconCAT; Sample preparation; emPAI.

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Bacterial Proteins / analysis*
  • Cell Fractionation
  • Colony Count, Microbial
  • Mass Spectrometry / methods*
  • Stress, Physiological*
  • Trypsin / metabolism

Substances

  • Anti-Bacterial Agents
  • Bacterial Proteins
  • Trypsin