Figure 2.

PAZAR central concept: analysis and input/output system. The sequences and transcription factors are stored independently in the database and are then linked together as inputs of an analysis. Other types of input can be used, such as a biological sample (for example, nuclear extract) or a condition (for example, addition of a chemical compound). The analysis is defined by various properties (the method and cell type used, the PubMed identifier, and so on) and links inputs and outputs together. An output could be the observed effect, for example expression response or interaction level. The system is very flexible, allowing various combinations of inputs and outputs.