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Updated: Aug 29, 2026

Organic Solvent-Based Protein Precipitation for Robust Proteome Purification Ahead of Mass Spectrometry
Published on: February 7, 2022
Simple and reliable method to precipitate proteins from bacterial culture supernatant
Randolph B Caldwell1, Claus T Lattemann
1CREATOGEN AG, D-86156 Augsburg, Germany.
Abstract:
A simple and reliable method for precipitating protein from bacterial culture supernatants based on a pyrogallol red-molybdate-methanol (PRMM) protocol has been developed and applied for the analysis of proteins secreted by a bacterial type III secretion system. PRMM-based precipitation has been shown to be more efficient and robust than are conventional protocols.
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