title: VANTED: a system for advanced data analysis and visualization in the context of biological networks.
abstract: BACKGROUND
  Recent advances with high-throughput methods in life-science research have increased the need for automatized data analysis and visual exploration techniques. Sophisticated bioinformatics tools are essential to deduct biologically meaningful interpretations from the large amount of experimental data, and help to understand biological processes.
  
  
  RESULTS
  We present VANTED, a tool for the visualization and analysis of networks with related experimental data. Data from large-scale biochemical experiments is uploaded into the software via a Microsoft Excel-based form. Then it can be mapped on a network that is either drawn with the tool itself, downloaded from the KEGG Pathway database, or imported using standard network exchange formats. Transcript, enzyme, and metabolite data can be presented in the context of their underlying networks, e. g. metabolic pathways or classification hierarchies. Visualization and navigation methods support the visual exploration of the data-enriched networks. Statistical methods allow analysis and comparison of multiple data sets such as different developmental stages or genetically different lines. Correlation networks can be automatically generated from the data and substances can be clustered according to similar behavior over time. As examples, metabolite profiling and enzyme activity data sets have been visualized in different metabolic maps, correlation networks have been generated and similar time patterns detected. Some relationships between different metabolites were discovered which are in close accordance with the literature.
  
  
  CONCLUSIONS
  VANTED greatly helps researchers in the analysis and interpretation of biochemical data, and thus is a useful tool for modern biological research. VANTED as a Java Web Start Application including a user guide and example data sets is available free of charge at http://vanted.ipk-gatersleben.de.
authors.affiliation: Department of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr, 3, 06466 Gatersleben, Germany. junker@ipk-gatersleben.de
authors.forename: Björn H
authors.initials: BH
authors.lastname: Junker
authors.forename: Christian
authors.initials: C
authors.lastname: Klukas
authors.forename: Falk
authors.initials: F
authors.lastname: Schreiber
mesh_terms: D000465:Algorithms; D003196:Computer Graphics; D003198:Computer Simulation; D008954:Models, Biological; D015398:Signal Transduction / Q000502:physiology*; D012984:Software; D014157:Transcription Factors / Q000378:metabolism*; D014584:User-Computer Interface
chemical_list: D014157:Transcription Factors