title: ALC: automated reduction of rule-based models.
abstract: BACKGROUND
  Combinatorial complexity is a challenging problem for the modeling of cellular signal transduction since the association of a few proteins can give rise to an enormous amount of feasible protein complexes. The layer-based approach is an approximative, but accurate method for the mathematical modeling of signaling systems with inherent combinatorial complexity. The number of variables in the simulation equations is highly reduced and the resulting dynamic models show a pronounced modularity. Layer-based modeling allows for the modeling of systems not accessible previously.
  
  
  RESULTS
  ALC (Automated Layer Construction) is a computer program that highly simplifies the building of reduced modular models, according to the layer-based approach. The model is defined using a simple but powerful rule-based syntax that supports the concepts of modularity and macrostates. ALC performs consistency checks on the model definition and provides the model output in different formats (C MEX, MATLAB, Mathematica and SBML) as ready-to-run simulation files. ALC also provides additional documentation files that simplify the publication or presentation of the models. The tool can be used offline or via a form on the ALC website.
  
  
  CONCLUSIONS
  ALC allows for a simple rule-based generation of layer-based reduced models. The model files are given in different formats as ready-to-run simulation files.
authors.affiliation: Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstr, 1, 39106 Magdeburg, Germany. koschorreck@mpi-magdeburg.mpg.de
authors.forename: Markus
authors.initials: M
authors.lastname: Koschorreck
authors.forename: Ernst Dieter
authors.initials: ED
authors.lastname: Gilles
mesh_terms: D001331:Automation; D001665:Binding Sites; D003198:Computer Simulation; D020407:Internet; D007700:Kinetics; D008954:Models, Biological; D010766:Phosphorylation; D012984:Software; D013269:Stochastic Processes; D014584:User-Computer Interface