Implementing an Interactive Web-Based DAS Client

  • Bernat Gel
  • Xavier Messeguer
Conference paper
Part of the Advances in Soft Computing book series (AINSC, volume 49)


The Distributed Annotation System (DAS) allows clients to access many disperse genome and protein annotation sources in a coordinate manner. Here we present DASGenExp, a web based DAS client for interactive visualisation and exploration of genome based annotations inspired in the Google Maps user interface. The client is easy to use and intuitive and integrates some unique functions not found in other DAS clients: interactivity, multiple genomes at the same time, arbitrary zoom windows,... DASGenExp can be freely accessed at .


DAS visualisation genome browser 


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  1. 1.
    Dowell, R.D., Jokerst, R.M., Day, A., Eddy, S.R., Stein, L.: The Distributed Annotation System. BMC Bioinformatics 2, 7 (2001)CrossRefGoogle Scholar
  2. 2.
    Kent, W.J., Sugnet, C.W., Furey, T.S., Roskin, K.M., Pringle, T.H., Zahler, A.M., Haussler, D.: The Human Genome Browser at UCSC. Genome Research 12(6), 996–1006 (2002)Google Scholar
  3. 3.
    Stalker, J., Gibbins, B., Meidl, P., Smith, J., Spooner, W., Hotz, H.R., Cox, A.V.: The Ensembl Web Site: Mechanics of a Genome Browser. Genome Research 14(5), 951–955 (2004)CrossRefGoogle Scholar
  4. 4.
    Prlic, A., Down, T.A., Kulesha, E., Finn, R.D., Kahari, A., Hubbard, T.J.P.: Integrating sequence and structural biology with DAS. BMC Bioinformatics 8, 333 (2007)CrossRefGoogle Scholar
  5. 5.
    Prototype JavaScript framework: Easy Ajax and DOM manipulation for dynamic web applications (May 2008),
  6. 6.
    Ext - A foundation you can build (May 2008),
  7. 7.
    Bio::Das::Lite - Perl extension for the DAS (HTTP+XML) Protocol (May 2008),,

Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Bernat Gel
    • 1
  • Xavier Messeguer
    • 1
  1. 1.Departament de Llenguatges i Sistemes InformàticsUniversitat Politècnica de Catalunya (UPC) 

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