M.A. Hanson, C.B. Roth, E. Jo, M.T. Griffith, F.L. Scott, G. Reinhart, H. Desale, B. Clemons, S.M. Cahalan, S.C. Schuerer, M.G. Sanna, G.W. Han, P. Kuhn, H. Rosen, R.C. Stevens. “Crystal structure of a lipid G protein-coupled receptor” Science 335, 851-855 (2012). PMC3338336.
https://www.science.org/doi/abs/10.1126/science.1215904