Induces cartilage and bone formation. May be the osteoinductive factor responsible for the phenomenon of epithelial osteogenesis. Plays a role in calcium regulation and bone homeostasis. Homodimer; disulfide-linked. Interacts with SOSTDC1. Interacts with TWSG1. Expressed in the kidney and bladder. Lower levels seen in the brain. Belongs to the TGF-beta family. Note: This description may include information from UniProtKB.
Protein type: Secreted; Secreted, signal peptide
Cellular Component: extracellular matrix; extracellular space; extracellular region
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.