The type XIII collagen ectodomain is a 150-nm rod and capable of binding to fibronectin, nidogen-2, perlecan, and heparin.
Tu H, Sasaki T, Snellman A, Göhring W, Pirilä P, Timpl R, Pihlajaniemi T. J Biol Chem. 2002 Jun 21; 277(25):23092-9. Epub 2002 Apr 15.