Effects of the Nature of the Metal Ion, Protein and Substrate on the Catalytic Center in Matrix Metalloproteinase-1: Insights from Multilevel MD, QM/MM and QM Studies
Document Type
Article
Publication Date
12-27-2021
Department
Department of Chemistry; Department of Chemical Engineering
Abstract
Matrix metalloproteinase-1 (MMP-1) is a Zn(II) dependent endopeptidase involved in the degradation of collagen- the most abundant structural protein in the extracellular matrix of connective tissues and the human body. Herein we performed a multilevel computational analysis including molecular dynamics (MD), combined quantum mechanics/molecular mechanics (QM/MM), and quantum mechanics (QM) calculations to characterize the structure and geometry of the catalytic Zn(II) within the protein environment in comparison to crystallographic and spectroscopic data. The substrate's removal fine-tuned impact on the conformational dynamics and geometry of the catalytic Zn(II) center was also explored. Finally, the study revealed the effect of substituting catalytic Zn(II) by Co(II) on the overall structure and dynamics of the MMP-1•THP complex and specifically on the geometry of the catalytic metal center. Overall our QM/MM and QM studies were in good agreement with the MM description of the Zn(II) centers in the MD simulations.
Publication Title
Chemphyschem : a European journal of chemical physics and physical chemistry
Recommended Citation
Varghese, A.,
Chaturvedi, S.,
DiCastri, B.,
Mehler, E.,
Fields, G. B.,
&
Karabencheva-Christova, T.
(2021).
Effects of the Nature of the Metal Ion, Protein and Substrate on the Catalytic Center in Matrix Metalloproteinase-1: Insights from Multilevel MD, QM/MM and QM Studies.
Chemphyschem : a European journal of chemical physics and physical chemistry.
http://doi.org/10.1002/cphc.202100680
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/15631