Chinese and US universities have joined a trio of biopharma companies in an open-source research collaboration to map the known G protein–coupled receptors (GPCRs) using the latest imaging technology. ShanghaiTech University's iHuman Institute, the Shanghai Institute of Materia Medica, the University of Southern California, Amgen, Sanofi and Ono Pharmaceutical make up the nonprofit GPCR Consortium; the collaborators hope to bring in additional partners to plot an initial 200 of the 826 known GPCRs, with a view to applying the resulting discoveries to the treatment of diabetes, cancer and mental disorders. The consortium plans to publish its findings in the public domain.