Experimental validation for quantitative protein network models

Cellular responses are the consequence of complex reactions of protein networks. The complexity should ultimately be described by a set of formulas in a quantitative fashion, in which each formula defines the reactions in response to given types of input. However, testing these formulas has not been a simple task because of the lack of appropriate means for experimental validation. ‘Reverse-phase’ lysate microarrays have been proved to be powerful for such requirements and thus can be a good resource for providing an experimental reference point for the theoretical biology of protein networks.