Protonation states of central amino acids in a zinc metalloprotease complexed with inhibitor: Molecular mechanics optimizations and ab initio molecular orbital calculations.

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ID: 103306
2020
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Abstract
The zinc-metalloprotease pseudolysin (PLN) secreted from bacteria degrades extracellular proteins to produce bacterial nutrition. Since PLN has a Zn ion at the inhibitor-binding site, the interactions between Zn and PLN residues as well as inhibitor can be significantly changed depending on the protonation states of PLN residues at the inhibitor-binding site. To determine stable protonation states of these residues, we here considered different protonation states for Glu and His residues located around Zn and investigated the electronic states of the PLN + inhibitor complex, using ab initio molecular simulations. The protonation state of His223 was found to significantly affect the specific interactions between PLN and the inhibitor.
Reference Key
ezawa2020protonationbiophysical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ezawa, Takuya;Saito, Ryosuke;Suzuki, Shusuke;Sugiyama, Satoshi;Sylte, Ingebrigt;Kurita, Noriyuki;
Journal biophysical chemistry
Year 2020
DOI
S0301-4622(20)30076-4
URL
Keywords
inhibitor drug design metalloprotease antimicrobial resistance bacterial virulence fragment molecular orbital hydroxamate compound molecular simulation protein-ligand interactions

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