Homotrimer; disulfide-linked. Can bind to fibrinogen, fibronectin, laminin and type V collagen (By similarity). Interacts (via the TSP type I repeats) with CD36; the interaction conveys an antiangiogenic effect. Interacts (via the TSP type I repeats) with HRG; the interaction blocks the antiangiogenic effect of THBS2 with CD36. Can bind to fibrinogen, fibronectin, laminin.