Vitamin K-dependent carboxylase: possible role of the substrate “propeptide” as an intracellular recognition site - Suttie, JW; Hoskins, JA; Engelke, J; Hopfgartner, A; Ehrlich, H; Bang, NU; Belagaje, RM; Schoner, B; Long, GL (Proc Natl Acad Sci USA, 1987)