The raw reads and the contigs are provided by The Baylor Sequencing Center, Houston, Texas, (A. Kuspa and R. Gibbs) where sequencing is supported by the NIH; the Institute of Biochemistry, Cologne together with the Institute of Molecular Biotechnology, Jena, Germany (G. Glöckner , A. Rosenthal, L. Eichinger and A. Noegel) where sequencing is supported by the Deutsche Forschungsgemeinschaft (No 113/10-1 and 10-2).; and the EUDICT consortium supported by The European Union (M-A. Rajandream and B. Barrell). Guidelines on use of data in publications are available at http://www.sanger.ac.uk/Projects/use-policy.shtml and http://www.uni-koeln.de/dictyostelium/guidelines.shtml.