T. Lukk, A. Sakai, C. Kalyanaraman, S. Brown, H. J. Imker, L. Song, A. A. Fedorov, E. V. Fedorov, R. Toro, B. Hillerich, R. Seidel, Y. Patskovsky, M. W. Vetting, S. K. Nair, P. C. Babbitt, S. C. Almo, J. A. Gerlt, and M. P. Jacobson.  “Computational prediction of the diversity of enzyme specificity among dipeptide epimerases in the enolase superfamily”.  PNAS, 109 (2012) 4122-4127. [F1000] [Discussion in PSI/Nature Knowledgebase] [Chemical&Engineering News] PMC3306705