 Rosetta @ home is also used in protein docking prediction , which determines the structure of multiple complexed proteins , or quaternary structure . This type of protein interaction affects many cellular functions , including antigen – antibody and enzyme – inhibitor binding and cellular import and export . Determining these interactions is critical for drug design . Rosetta is used in the Critical Assessment of Prediction of Interactions ( CAPRI ) experiment , which evaluates the state of the protein docking field similar to how CASP gauges progress in protein structure prediction . The computing power made available by Rosetta @ home 's project volunteers has been cited as a major factor in Rosetta 's performance in CAPRI , where its docking predictions have been among the most accurate and complete . 
