Molecular basis for the inhibition of human a-thrombin by the macrocyclic peptide cyclotheonamide A - Maryanoff, B E; Qiu, X; Padmanabhan, K P; Tulinsky, A; Almond, H R, Jr; Andrade-Gordon, P; Greco, M N; Kauffman, J A; Nicolaou, K C; Liu, A; Brungs, P H; Fusetani, N (Proc Natl Acad Sci USA, 1993)