PLD2-PI(4,5)P2 interactions in fluid phase membranes: Structural modeling and molecular dynamics simulations

PLoS One. 2020 Jul 20;15(7):e0236201. doi: 10.1371/journal.pone.0236201. eCollection 2020.

Abstract

Interaction of phospholipase D2 (PLD2) with phosphatidylinositol (4,5)-bisphosphate (PIP2) is regarded as the critical step of numerous physiological processes. Here we build a full-length model of human PLD2 (hPLD2) combining template-based and ab initio modeling techniques and use microsecond all-atom molecular dynamics (MD) simulations of the protein in contact with a complex membrane to determine hPLD2-PIP2 interactions. MD simulations reveal that the intermolecular interactions preferentially occur between specific PIP2 phosphate groups and hPLD2 residues; the most strongly interacting residues are arginine at the pbox consensus sequence (PX) and pleckstrin homology (PH) domain. Interaction networks indicate formation of clusters at the protein-membrane interface consisting of amino acids, PIP2, and 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidic acid (POPA); the largest cluster was in the PH domain.

Publication types

  • Research Support, N.I.H., Intramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Arabidopsis Proteins / chemistry
  • Arabidopsis Proteins / ultrastructure
  • Bacterial Proteins / chemistry
  • Bacterial Proteins / ultrastructure
  • Binding Sites
  • Cell Membrane / chemistry
  • Cell Membrane / metabolism*
  • Consensus Sequence
  • Crystallography, X-Ray
  • Molecular Docking Simulation
  • Molecular Dynamics Simulation
  • Phosphatidic Acids / metabolism
  • Phosphatidylinositol 4,5-Diphosphate / chemistry
  • Phosphatidylinositol 4,5-Diphosphate / metabolism*
  • Phospholipase D / chemistry
  • Phospholipase D / metabolism*
  • Phospholipase D / ultrastructure
  • Protein Binding
  • Protein Domains
  • Sequence Homology, Amino Acid

Substances

  • 1-palmitoyl-2-oleoyl-glycero-3-phosphatidic acid
  • Arabidopsis Proteins
  • Bacterial Proteins
  • Phosphatidic Acids
  • Phosphatidylinositol 4,5-Diphosphate
  • phospholipase D2
  • Phospholipase D