Download MendeleyStructural Basis for the High-Affinity Interaction of Nidogen-1 with Immunoglobulin-Like Domain 3 of Perlecan
Kvansakul, M., Hopf, M., Ries, A., Timpl, R., Hohenester, E.(2001) EMBO J 20: 5342
- PubMed: 11574465
- DOI: https://doi.org/10.1093/emboj/20.19.5342
- Primary Citation of Related Structures:
1GL4 - PubMed Abstract:
Nidogen and perlecan are large multifunctional basement membrane (BM) proteins conserved in all metazoa. Their high-affinity interaction, which is likely to contribute to BM assembly and function, is mediated by the central G2 domain in nidogen and the third immunoglobulin (IG)-like domain in perlecan, IG3. We have solved the crystal structure at 2.0 A resolution of the mouse nidogen-1 G2-perlecan IG3 complex. Perlecan IG3 belongs to the I-set of the IG superfamily and binds to the wall of the nidogen-1 G2 beta-barrel using beta-strands C, D and F. Nidogen-1 residues participating in the extensive interface are highly conserved, whereas the corresponding binding site on perlecan is more variable. We hypothesize that a second, as yet unidentified, activity of nidogen overlaps with perlecan binding and accounts for the unusually high degree of surface conservation in the G2 domain.
Organizational Affiliation:
Biophysics Section, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BW, UK.
