von Willebrand factor - Fujimura, Y; Titani, K; Holland, L Z; Russell, S R; Roberts, J R; Elder, J H; Ruggeri, Z M; Zimmerman, T S (A reduced and alkylated 52/48-kDa fragment beginning at amino acid residue 449 contains the domain interacting with platelet glycoprotein lb. J Biol Chem, 1986)