Roche Polska Sp. z o.o. 1 article published in JoVE Biochemistry gP2S, an Information Management System for CryoEM Experiments Dorota Wypych1, Daniel Kierecki1, Filip M. Golebiowski1, Alexis Rohou2 1Roche Polska Sp. z o.o., 2Department of Structural Biology, Genentech gP2S is a web application for the tracking of cryoEM experiments. Its main features are described, as are the steps required to install and configure the application. Once configured, the application allows one to accurately record metadata associated with negative stain and cryoEM experiments.