Citations: 48

z-index: 2.29

Basic information
Short name SWISS-2DPAGE
Full name Two-dimensional polyacrylamide gel electrophoresis database
Description SWISS-2DPAGE contains data on proteins identified on various 2-D PAGE and SDS-PAGE reference maps.
Year founded 1998
Last update & version 2011 3.10.2
Accessibility Accessible
Contact information

The contact information is provided to facilitate update of database information, and it is curated based on the contact details in the database or the related publications. To ensure effective contact with database constructors, we give priority to the contact details in the database.

University/Institution Geneva University Hospital
Country/Region Switzerland
Contact name (PI/Team) L Tonella
Contact email (PI/Helpdesk)
Data information
Data object
Data type
Database category
Major organism
  • Escherichia coli SWISS-2DPAGE database update [PMID: 9740056]
    L Tonella, B J Walsh, J C Sanchez, K Ou, M R Wilkins, M Tyler, S Frutiger, A A Gooley, I Pescaru, R D Appel, J X Yan, A Bairoch, C Hoogland, F S Morch, G J Hughes, K L Williams, D F Hochstrasser,

    The combination of two-dimensional polyacrylamide gel electrophoresis (2-D PAGE), computer image analysis and several protein identification techniques allowed the Escherichia coli SWISS-2DPAGE database to be established. This is part of the ExPASy molecular biology server accessible through the WWW at the URL address . Here we report recent progress in the development of the E. coli SWISS-2DPAGE database. Proteins were separated with immobilized pH gradients in the first dimension and sodium dodecyl sulfate-polyacrylamide gel electrophoresis in the second dimension. To increase the resolution of the separation and thus the number of identified proteins, a variety of wide and narrow range immobilized pH gradients were used in the first dimension. Micropreparative gels were electroblotted onto polyvinylidene difluoride membranes and spots were visualized by amido black staining. Protein identification techniques such as amino acid composition analysis, gel comparison and microsequencing were used, as well as a recently described Edman "sequence tag" approach. Some of the above identification techniques were coupled with database searching tools. Currently 231 polypeptides are identified on the E. coli SWISS-2DPAGE map: 64 have been identified by N-terminal microsequencing, 39 by amino acid composition, and 82 by sequence tag. Of 153 proteins putatively identified by gel comparison, 65 have been confirmed. Many proteins have been identified using more than one technique. Faster progress in the E. coli proteome project will now be possible with advances in biochemical methodology and with the completion of the entire E. coli genome.

    Electrophoresis 1998:19(11)

    48 Citations (from Europe PMC, 2019-06-22)


  • Ranking in all databases: No. 2161
  • Ranking in category/categories:
    • Expression: No. 398
The box plots depict Z-index distribution for all databases in Database Commons and for specific database category/categories. The red line indicates log2(Z-index) of SWISS-2DPAGE.

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Record metadata

  • Created on: 2018-02-07
    • ***mengyu@*** [2018-09-26]
    • ***ngyang17m@*** [2018-02-24]
    • ***ina@*** [2018-02-07]

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