- A family of phosphodiesterase inhibitors discovered by cocrystallography and scaffold-based drug design. Card, G.L., Blasdel, L., England, B.P., Zhang, C., Suzuki, Y., Gillette, S., Fong, D., Ibrahim, P.N., Artis, D.R., Bollag, G., Milburn, M.V., Kim, S.H., Schlessinger, J., Zhang, K.Y. Nat. Biotechnol. (2005)