5EM9

Crystal structure of the SNX27 PDZ domain bound to the phosphorylated C-terminal 5HT4(a)R PDZ binding motif


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.169 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

A molecular code for endosomal recycling of phosphorylated cargos by the SNX27-retromer complex.

Clairfeuille, T.Mas, C.Chan, A.S.Yang, Z.Tello-Lafoz, M.Chandra, M.Widagdo, J.Kerr, M.C.Paul, B.Merida, I.Teasdale, R.D.Pavlos, N.J.Anggono, V.Collins, B.M.

(2016) Nat.Struct.Mol.Biol. 23: 921-932

  • DOI: 10.1038/nsmb.3290
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Recycling of internalized receptors from endosomal compartments is essential for the receptors' cell-surface homeostasis. Sorting nexin 27 (SNX27) cooperates with the retromer complex in the recycling of proteins containing type I PSD95-Dlg-ZO1 (PDZ) ...

    Recycling of internalized receptors from endosomal compartments is essential for the receptors' cell-surface homeostasis. Sorting nexin 27 (SNX27) cooperates with the retromer complex in the recycling of proteins containing type I PSD95-Dlg-ZO1 (PDZ)-binding motifs. Here we define specific acidic amino acid sequences upstream of the PDZ-binding motif required for high-affinity engagement of the human SNX27 PDZ domain. However, a subset of SNX27 ligands, such as the β2 adrenergic receptor and N-methyl-D-aspartate (NMDA) receptor, lack these sequence determinants. Instead, we identified conserved sites of phosphorylation that substitute for acidic residues and dramatically enhance SNX27 interactions. This newly identified mechanism suggests a likely regulatory switch for PDZ interaction and protein transport by the SNX27-retromer complex. Defining this SNX27 binding code allowed us to classify more than 400 potential SNX27 ligands with broad functional implications in signal transduction, neuronal plasticity and metabolite transport.


    Organizational Affiliation

    Institute for Molecular Bioscience, University of Queensland, St. Lucia, Queensland, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sorting nexin-27
A
101Rattus norvegicusMutation(s): 0 
Gene Names: Snx27 (Mrt1)
Find proteins for Q8K4V4 (Rattus norvegicus)
Go to UniProtKB:  Q8K4V4
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SEP-LEU-GLU-SER-CYS-PHE
B
8Homo sapiensMutation(s): 0 
Gene Names: HTR4
Find proteins for Q13639 (Homo sapiens)
Go to Gene View: HTR4
Go to UniProtKB:  Q13639
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
B
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.169 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 37.219α = 90.00
b = 48.753β = 90.00
c = 57.059γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (Australia)AustraliaAPP1061574
National Health and Medical Research Council (Australia)AustraliaAPP1058734

Revision History 

  • Version 1.0: 2016-09-07
    Type: Initial release
  • Version 1.1: 2016-09-21
    Type: Database references
  • Version 1.2: 2016-10-19
    Type: Database references
  • Version 1.3: 2017-09-27
    Type: Author supporting evidence, Data collection, Derived calculations