Sclerostin regulates bone morphogenetic protein (BMP) bioavailability through interactions with BMP complexes and fibrillin microfibrils.
Sclerostin (SOST) is a secreted glycoprotein that antagonizes Wnt and BMP signaling, however, the molecular mechanisms regulating its extracellular distribution and growth factor (GF) interactions remain poorly understood. Here, we identify fibrillin microfibrils as high-affinity extracellular binding partners of SOST....