This article provides kinetic constants for C-terminal processing of procollagen type I by bone morphogenetic protein 1 (BMP-1; the major procollagen C-proteinase). a reaction stimulated by the connective tissue glycoprotein procollagen C-proteinase enhancer 1 (PCPE-1). Reported are Km. Vmax. https://www.roneverhart.com/API-1608-II-Recording-and-Mixing-Console-p17720/