THEOBIO17 welcomes you to Donostia/San Sebastian. The scope of this congress is on the modeling of biological, biochemical and biophysical systems, ranging from electronic structure to mesoscopic coarse grained systems and beyond from both an application and a methodological point of view. Experimentalists are encouraged to attend for a better interaction between theory and experiment.Young researchers and advanced graduate students are particularly welcome to actively participate, either by presenting a poster or giving a talk.