High resolution structure of the N-terminal domain of tissue inhibitor of metalloproteinases-2 and characterization of its interaction site with matrix metalloproteinase-3.
The high resolution structure of the N-terminal domain of tissue inhibitor of metalloproteinases-2 (N-TIMP-2) in solution has been determined using multidimensional heteronuclear NMR spectroscopy, with the structural calculations based on an extensive set of constraints, including 3132 nuclear Overhauser effect-based distance constraints, 56 hydrogen bond constraints, and 220 torsion angle constraints (an average of 26 ...
The high resolution structure of the N-terminal domain of tissue inhibitor of metalloproteinases-2 (N-TIMP-2) in solution has been determined using multidimensional heteronuclear NMR spectroscopy, with the structural calculations based on an extensive set of constraints, including 3132 nuclear Overhauser effect-based distance constraints, 56 hydrogen bond constraints, and 220 torsion angle constraints (an average of 26.9 constraints/residue). The core of the protein consists of a five-stranded beta-barrel that is homologous to the beta-barrel found in the oligosaccharide/oligonucleotide binding protein fold. The binding site for the catalytic domain of matrix metalloproteinases-3 (N-MMP-3) on N-TIMP-2 has been mapped by determining the changes in chemical shifts on complex formation for signals from the protein backbone (15N, 13C, and 1H). This approach identified a discrete N-MMP-3 binding site on N-TIMP-2 composed of the N terminus of the protein and the loops between beta-strands AB, CD, and EF. The beta-hairpin formed from strands A and B in N-TIMP-2 is significantly longer than the equivalent structure in TIMP-1, allowing it to make more extensive binding interactions with the MMP catalytic domain. A detailed comparison of the N-TIMP-2 structure with that of TIMP-1 bound to N-MMP-3 (Gomis-Ruth, F.-X., Maskos, K., Betz, M., Bergner, A., Huber, R., Suzuki, K., Yoshida, N., Nagase, H. , Brew, K., Bourne, G. P., Bartunik, H. & Bode, W. (1997) Nature 389, 77-80) revealed that the core beta-barrels are very similar in topology but that the loop connecting beta-strands CD (P67-C72) would need to undergo a large conformational change for TIMP-2 to bind in a similar manner to TIMP-1.
Related Citations:
Mapping the Binding Site for Matrix Metalloproteinase on the N-Terminal Domain of the Tissue Inhibitor of Metalloproteinases-2 by NMR Chemical Shift Perturbation Williamson, R.A., Carr, M.D., Frenkiel, T.A., Feeney, J., Freedman, R.B. (1997) Biochemistry 36: 13882
Chemically and Conformationally Authentic Active Domain of Human Tissue Inhibitor of Metalloproteinases-2 Refolded from Bacterial Inclusion Bodies Williamson, R.A., Natalia, D., Gee, C.K., Murphy, G., Carr, M.D., Freedman, R.B. (1996) Eur J Biochem 241: 476
Solution Structure of the Active Domain of Tissue Inhibitor of Metalloproteinases-2. A New Member of the Ob Fold Protein Family Williamson, R.A., Martorell, G., Carr, M.D., Murphy, G., Docherty, A.J., Freedman, R.B., Feeney, J. (1994) Biochemistry 33: 11745
Disulphide Bond Assignment in Human Tissue Inhibitor of Metalloproteinases (Timp) Williamson, R.A., Marston, F.A., Angal, S., Koklitis, P., Panico, M., Morris, H.R., Carne, A.F., Smith, B.J., Harris, T.J., Freedman, R.B. (1990) Biochem J 268: 267
Organizational Affiliation:
Department of Biosciences, University of Kent, Canterbury, Kent, CT2 7NJ, United Kingdom.
Download Mendeley
