4WWU

Structure of Mex67:Mtr2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.301 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Domain organization within the nuclear export factor Mex67:Mtr2 generates an extended mRNA binding surface.

Aibara, S.Valkov, E.Lamers, M.Stewart, M.

(2015) Nucleic Acids Res. 43: 1927-1936

  • DOI: 10.1093/nar/gkv030

  • PubMed Abstract: 
  • The Mex67:Mtr2 complex is the principal yeast nuclear export factor for bulk mRNA and also contributes to ribosomal subunit export. Mex67 is a modular protein constructed from four domains (RRM, LRR, NTF2-like and UBA) that have been thought to be jo ...

    The Mex67:Mtr2 complex is the principal yeast nuclear export factor for bulk mRNA and also contributes to ribosomal subunit export. Mex67 is a modular protein constructed from four domains (RRM, LRR, NTF2-like and UBA) that have been thought to be joined by flexible linkers like beads on a string, with the RRM and LRR domains binding RNAs and the NTF2-like and UBA domains binding FG-nucleoporins to facilitate movement through nuclear pores. Here, we show that the NTF2-like domain from Saccharomyces cerevisiae Mex67:Mtr2 also contributes to RNA binding. Moreover, the 3.3 Å resolution crystal structure of the Mex67(ΔUBA):Mtr2 complex, supplemented with small angle X-ray scattering data, indicated that the LRR domain has a defined spatial relationship to the Mex67(NTF2L):Mtr2 region. Conversely, the RRM domain and especially the UBA domain are more mobile. The conformation assumed by the LRR and NTF2-like domains results in clusters of positively-charged residues on each becoming arranged to form a continuous interface for binding RNA on the opposite side of the complex to the region that interacts with FG-nucleoporins to facilitate passage through nuclear pores.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge CB2 0QH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
mRNA export factor MEX67
A, B, D, E, G, H, J, K
488Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: MEX67
Find proteins for Q99257 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q99257
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
mRNA transport regulator MTR2
C, F, I, L
184Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: MTR2
Find proteins for P34232 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P34232
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
B, C, E, F, G, H, J, K
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.301 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.228 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 100.610α = 90.00
b = 76.720β = 94.09
c = 199.120γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-02-04
    Type: Initial release
  • Version 1.1: 2015-02-25
    Type: Database references