6EXZ

Crystal structure of Mex67 C-term


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.171 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Mip6 binds directly to the Mex67 UBA domain to maintain low levels of Msn2/4 stress-dependent mRNAs.

Martin-Exposito, M.Gas, M.E.Mohamad, N.Nuno-Cabanes, C.Tejada-Colon, A.Pascual-Garcia, P.de la Fuente, L.Chaves-Arquero, B.Merran, J.Corden, J.Conesa, A.Perez-Canadillas, J.M.Bravo, J.Rodriguez-Navarro, S.

(2019) EMBO Rep : e47964-e47964

  • DOI: 10.15252/embr.201947964
  • Primary Citation of Related Structures:  
    6EXZ

  • PubMed Abstract: 
  • RNA-binding proteins (RBPs) participate in all steps of gene expression, underscoring their potential as regulators of RNA homeostasis. We structurally and functionally characterize Mip6, a four-RNA recognition motif (RRM)-containing RBP, as a functional and physical interactor of the export factor Mex67 ...

    RNA-binding proteins (RBPs) participate in all steps of gene expression, underscoring their potential as regulators of RNA homeostasis. We structurally and functionally characterize Mip6, a four-RNA recognition motif (RRM)-containing RBP, as a functional and physical interactor of the export factor Mex67. Mip6-RRM4 directly interacts with the ubiquitin-associated (UBA) domain of Mex67 through a loop containing tryptophan 442. Mip6 shuttles between the nucleus and the cytoplasm in a Mex67-dependent manner and concentrates in cytoplasmic foci under stress. Photoactivatable ribonucleoside-enhanced crosslinking and immunoprecipitation experiments show preferential binding of Mip6 to mRNAs regulated by the stress-response Msn2/4 transcription factors. Consistent with this binding, MIP6 deletion affects their export and expression levels. Additionally, Mip6 interacts physically and/or functionally with proteins with a role in mRNA metabolism and transcription such as Rrp6, Xrn1, Sgf73, and Rpb1. These results reveal a novel role for Mip6 in the homeostasis of Msn2/4-dependent transcripts through its direct interaction with the Mex67 UBA domain.


    Organizational Affiliation

    Gene Expression and RNA Metabolism Laboratory, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
mRNA export factor MEX67A72Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: MEX67YPL169CP2520
UniProt
Find proteins for Q99257 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q99257 
Go to UniProtKB:  Q99257
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99257
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMT
Query on FMT

Download Ideal Coordinates CCD File 
B [auth A]FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.171 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.419α = 90
b = 71.419β = 90
c = 20.343γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of Economy and CompetitivenessSpainSAF 2015-67077-R

Revision History  (Full details and data files)

  • Version 1.0: 2018-11-21
    Type: Initial release
  • Version 1.1: 2019-11-13
    Changes: Database references