4BWP

Structure of Drosophila Melanogaster PAN3 pseudokinase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.6 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of the Pan3 Pseudokinase Reveals the Basis for Interactions with the Pan2 Deadenylase and the Gw182 Proteins

Christie, M.Boland, A.Huntzinger, E.Weichenrieder, O.Izaurralde, E.

(2013) Mol.Cell 51: 360

  • DOI: 10.1016/j.molcel.2013.07.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The PAN2-PAN3 deadenylase complex functions in general and miRNA-mediated mRNA degradation and is specifically recruited to miRNA targets by GW182/TNRC6 proteins. We describe the PAN3 adaptor protein crystal structure that, unexpectedly, forms intert ...

    The PAN2-PAN3 deadenylase complex functions in general and miRNA-mediated mRNA degradation and is specifically recruited to miRNA targets by GW182/TNRC6 proteins. We describe the PAN3 adaptor protein crystal structure that, unexpectedly, forms intertwined and asymmetric homodimers. Dimerization is mediated by a coiled coil that links an N-terminal pseudokinase to a C-terminal knob domain. The PAN3 pseudokinase binds ATP, and this function is required for mRNA degradation in vivo. We further identified conserved surfaces required for mRNA degradation, including the binding surface for the PAN2 deadenylase on the knob domain. The most remarkable structural feature is the presence of a tryptophan-binding pocket at the dimer interface, which mediates binding to TNRC6C in human cells. Together, our data reveal the structural basis for the interaction of PAN3 with PAN2 and the recruitment of the PAN2-PAN3 complex to miRNA targets by TNRC6 proteins.


    Organizational Affiliation

    Department of Biochemistry, Max Planck Institute for Developmental Biology, Spemannstrasse 35, 72076 Tübingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PAB-DEPENDENT POLY(A)-SPECIFIC RIBONUCLEASE SUBUNIT PAN-3
A, B
448Drosophila melanogasterMutation(s): 0 
Gene Names: PAN3
Find proteins for Q95RR8 (Drosophila melanogaster)
Go to Gene View: PAN3
Go to UniProtKB:  Q95RR8
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AN2
Query on AN2

Download SDF File 
Download CCD File 
A, B
AMP PHOSPHORAMIDATE
C10 H16 N6 O9 P2
FQMDCEJHLOLKLI-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.6 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.220 
  • Space Group: P 43 2 2
Unit Cell:
Length (Å)Angle (°)
a = 102.171α = 90.00
b = 102.171β = 90.00
c = 264.715γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-21
    Type: Initial release
  • Version 1.1: 2013-08-28
    Type: Database references