CTGF/CCN2 Proteins and Enzymes

CTGF belongs to the CCN (CYR61/CTGF/NOV) family of secreted proteins that share a common multimodular organization. Each protein contains an IGF-binding protein domain, a von Willebrand factor type C domain, a thrombospondin type I domain, and a cysteine knot domain. The multimodular CTGF has the ability to bind multiple ligands and has numerous effects on development, differentation, and disease. The C-terminal cysteine knot motif contains the HSPG (proteoglycan) and low density lipoprotein receptor (LDLR) binding sites that contribute to the adhesive and mitogenic properties of CTGF.