Multi-Q Web Server provides an automated data analysis tool for multiplexed protein quantitation based on the iTRAQ labeling method. Multi-Q is designed as a generic platform that can accommodate various input data formats from search engines and mass spectrometer manufacturers. In comparison with its previous stand-alone version, this new web server version provides many enhanced features and flexible options for quantitation. The work flow of the web server is represented by a quantitation wizard so that the tool is easy to use. It also provides friendly user interface in configuration settings. The web server default output a standard report for quantitation results. In addition, it allows users to customize their outputs report and information of user’s interest can be easily highlighted. The output provides visualization of mass spectral data so that users can conveniently validate the results. Multi-Q Web Server is a fully automated and easy to use quantitation tool suitable f...