“…Cross-links between residue 9N and helical residue 930 and between 16°and helical residue 87 of the 1 chain have been found in a variety of tissues such as rat tail tendon (Kang, 1972), bovine bone (Eyre & Glimcher, 1973), rabbit skin, bone, and tendon (Henkel et al, 1976), bovine skin (Becker et al, 1975Yamauchi et al, 1982), and bovine dentin (Kuboki et al, 1981b;Scott, 1980). Involvement of the a2 chain in cross-linking has been suggested in earlier studies (Fujii et al, 1975;Scott et al, 1976;Scott, 1980;Light & Bailey, 1985).…”