Download MendeleyCrystal structure of the catalytic domain of MMP-16/MT3-MMP: characterization of MT-MMP specific features.
Lang, R., Braun, M., Sounni, N.E., Noel, A., Frankenne, F., Foidart, J.M., Bode, W., Maskos, K.(2004) J Mol Biol 336: 213-225
- PubMed: 14741217
- DOI: https://doi.org/10.1016/j.jmb.2003.12.022
- Primary Citation of Related Structures:
1RM8 - PubMed Abstract:
Membrane-type matrix metalloproteinases (MT-MMPs) have attracted strong attention, because four of them can activate a key player in the tumor scenario, proMMP-2/progelatinase A. In addition to this indirect effect on the cellular environment, these MT-MMPs degrade extracellular matrix proteins, and their overproduction is associated with tumor growth. We have solved the structure of the catalytic domain (cd) of MT3-MMP/MMP-16 in complex with the hydroxamic acid inhibitor batimastat. CdMT3-MMP exhibits a classical MMP-fold with similarity to MT1-MMP. Nevertheless, it also shows unique properties such as a modified MT-specific loop and a closed S1' specificity pocket, which might help to design specific inhibitors. Some MT-MMP-specific features, derived from the crystal structures of MT-1-MMP determined previously and MT3-MMP, and revealed in recent mutagenesis experiments, explain the impaired interaction of the MT-MMPs with TIMP-1. Docking experiments with proMMP-2 show some exposed loops including the MT-loop of cdMT3-MMP involved in the interaction with the proMMP-2 prodomain in the activation encounter complex. This model might help to understand the experimentally proven importance of the MT-loop for the activation of proMMP-2.
Organizational Affiliation:
Max-Planck-Institut für Biochemie, Abteilung Strukturforschung, Am Klopferspitz 18a, D-82152 Martinsried-bei-munchen, Germany.
