Computational analysis of the metal selectivity of matrix metalloproteinase 8

PLoS One. 2020 Dec 4;15(12):e0243321. doi: 10.1371/journal.pone.0243321. eCollection 2020.

Abstract

Matrix metalloproteinase (MMP) is a class of metalloenzyme that cleaves peptide bonds in extracellular matrices. Their functions are important in both health and disease of animals. Here using quantum mechanics simulations of the MMP8 protein, the coordination chemistry of different metal cofactors is examined. Structural comparisons reveal that Jhan-Teller effects induced by Cu(II) coordination distorts the wild-type MMP8 active site corresponding to a significant reduction in activity observed in previous experiments. In addition, further analysis suggests that a histidine to glutamine mutation at residue number 197 can potentially allow the MMP8 protein to utilize Cu(II) in reactions. Simulations also demonstrates the requirement of a conformational change in the ligand before enzymatic cleavage. The insights provided here will assist future protein engineering efforts utilizing the MMP8 protein.

MeSH terms

  • Computer Simulation*
  • Copper / chemistry*
  • Humans
  • Matrix Metalloproteinase 8 / chemistry*
  • Models, Molecular*
  • Protein Domains

Substances

  • Copper
  • MMP8 protein, human
  • Matrix Metalloproteinase 8

Grants and funding

The author received no specific funding for this work.