Cyclic HIV protease inhibitors: synthesis, conformational analysis, P2/P2' structure-activity relationship, and molecular recognition of cyclic ureas.
Lam, P.Y., Ru, Y., Jadhav, P.K., Aldrich, P.E., DeLucca, G.V., Eyermann, C.J., Chang, C.H., Emmett, G., Holler, E.R., Daneker, W.F., Li, L., Confalone, P.N., McHugh, R.J., Han, Q., Li, R., Markwalder, J.A., Seitz, S.P., Sharpe, T.R., Bacheler, L.T., Rayner, M.M., Klabe, R.M., Shum, L., Winslow, D.L., Kornhauser, D.M., Jackson, D.A., Erickson-Viitanen, S., Hodge, C.N.(1996) J Med Chem 39: 3514-3525
- PubMed: 8784449 
- DOI: 10.1021/jm9602571
- Primary Citation of Related Structures:  
1QBS - PubMed Abstract: 
High-resolution X-ray structures of the complexes of HIV-1 protease (HIV-1PR) with peptidomimetic inhibitors reveal the presence of a structural water molecule which is hydrogen bonded to both the mobile flaps of the enzyme and the two carbonyls flanking the transition-state mimic of the inhibitors ...