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Updated: Jun 2, 2026

An Aquatic Microbial Metaproteomics Workflow: From Cells to Tryptic Peptides Suitable for Tandem Mass Spectrometry-based Analysis
Published on: September 15, 2015
How microbial proteomics got started
1Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA. fcneid@umich.edu
Abstract:
Publication in 1975 by Patrick O'Farrell of a procedure to separate the proteins of Escherichia coli in a two-dimensional array on polyacrylamide gels marked the birth of the field now called proteomics. Although O'Farrell's contribution was soon to have wide ranging effects on research in many fields, the initial impact was greatest in the arena of whole cell physiology. Refinements and amplification of the original procedure, including improved standardization and reproducibility of gel patterns, introduction of techniques to measure the quantity of protein in individual spots, and biochemical identification of the protein spots, afforded investigators the ability to explore for the first time the integrated working of control circuits in the living cell. From O'Farrell's contribution has grown the rich array of techniques currently employed and still being developed in the diverse field of microbial proteomics.
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