Abstract
We report a molecular dynamics simulation study of a zinc-protease – gelatinase A or MMP2 – which is a major target for drug design, being involved in tumor metastasis and other degenerative diseases. Two structures have been employed as starting conditions, one based on the crystal of multi-domain proMMP2, the other consisting of the catalytic domain only. The overall fold of the two models is maintained over the 1260 ps trajectory, enabling us to analyze correlations of fluctuations among domains, and to observe the presence of correlations within the catalytic domain in the multi-domain enzyme only, hence due to the presence of hemopexin and fibronectin domains. In the multi-domain protein, two cavities are conserved over the trajectory, one of them pointing to a key region, a crevice surrounding the catalytic zinc. The other one is localized across the three domains of the MMP2 metalloproteinase. These areas are partially covered by the propeptide in the crystal structure of proMMP2. We propose a model of MMP2-collagen interaction that involves both identified cavities and takes into account the inter/intra domain cross-correlations.
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Falconi, M., Altobelli, G., Iovino, M.C. et al. Molecular dynamics simulation of Matrix Metalloproteinase 2: fluctuations and time evolution of recognition pockets. J Comput Aided Mol Des 17, 837–848 (2003). https://doi.org/10.1023/B:JCAM.0000021883.44532.75
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DOI: https://doi.org/10.1023/B:JCAM.0000021883.44532.75