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  • team
  • department
  • center
  • program_project
  • nrc
  • whocc
  • project
  • software
  • tool
  • patent
  • Administrative Staff
  • Assistant Professor
  • Associate Professor
  • Clinical Research Assistant
  • Clinical Research Nurse
  • Clinician Researcher
  • Department Manager
  • Dual-education Student
  • Full Professor
  • Honorary Professor
  • Lab assistant
  • Master Student
  • Non-permanent Researcher
  • Nursing Staff
  • Permanent Researcher
  • Pharmacist
  • PhD Student
  • Physician
  • Post-doc
  • Prize
  • Project Manager
  • Research Associate
  • Research Engineer
  • Retired scientist
  • Technician
  • Undergraduate Student
  • Veterinary
  • Visiting Scientist
  • Deputy Director of Center
  • Deputy Director of Department
  • Deputy Director of National Reference Center
  • Deputy Head of Facility
  • Director of Center
  • Director of Department
  • Director of Institute
  • Director of National Reference Center
  • Group Leader
  • Head of Facility
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Scientific Fields
Diseases
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Published in The Biochemical journal - 05 May 2015

Delhommel F, Chaffotte A, Terrien E, Raynal B, Buc H, Delepierre M, Cordier F, Wolff N

Link to Pubmed [PMID] – 25942057

Biochem. J. 2015 Jul;469(1):159-68

Phosphatase and tensin homologue (PTEN) and microtubule-associated serine threonine kinase 2 (MAST2) are key negative regulators of survival pathways in neuronal cells. The two proteins interact via the PDZ (PSD-95, Dlg1, Zo-1) domain of MAST2 (MAST2-PDZ). During infection by rabies virus, the viral glycoprotein competes with PTEN for interaction with MAST2-PDZ and promotes neuronal survival. The C-terminal PDZ-binding motifs (PBMs) of the two proteins bind similarly to MAST2-PDZ through an unconventional network of connectivity involving two anchor points. Combining stopped-flow fluorescence, analytical ultracentrifugation (AUC), microcalorimetry and NMR, we document the kinetics of interaction between endogenous and viral ligands to MAST2-PDZ as well as the dynamic and structural effects of these interactions. Viral and PTEN peptide interactions to MAST2-PDZ occur via a unique kinetic step which involves both canonical C-terminal PBM binding and N-terminal anchoring. Indirect effects induced by the PBM binding include modifications to the structure and dynamics of the PDZ dimerization surface which prevent MAST2-PDZ auto-association. Such an energetic communication between binding sites and distal surfaces in PDZ domains provides interesting clues for protein regulation overall.