New perspectives in the Escherichia coli proteome investigation

Proteomics. 2001 Mar;1(3):409-23. doi: 10.1002/1615-9861(200103)1:3<409::AID-PROT409>3.0.CO;2-M.


Escherichia coli is a model organism for biochemical and biological studies as it is one of the best characterised prokaryote. Two-dimensional polyacrylamide gel electrophoresis, computer image analysis and different protein identification techniques gave rise, in 1995, to the Escherichia coli SWISS-2D PAGE database ( In the E. coli 3.5-10 SWISS-2D PAGE map, 40% of the E. coli proteome was displayed. The present study demonstrated that the use of narrow range pH gradients is able to potentially display up to a few copies of protein per E. coli cell. Moreover, the six new E. coli SWISS-2D PAGE maps (pH 4-5, 4.5-5.5, 5-6, 5.5-6.7, 6-9 and 6-11) presented here displayed altogether more than 70% of the entire E. coli proteome.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Databases, Protein
  • Electrophoresis, Gel, Two-Dimensional
  • Escherichia coli / chemistry*
  • Escherichia coli Proteins / isolation & purification*
  • Peptide Mapping
  • Proteome / isolation & purification*


  • Escherichia coli Proteins
  • Proteome