5BMU

The crystal structure of the GST-like domains complex of AIMP3-EPRS mutant C92SC105SC123S


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.170 
  • R-Value Work: 0.138 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Assembly of Multi-tRNA Synthetase Complex via Heterotetrameric Glutathione Transferase-homology Domains

Cho, H.Y.Maeng, S.J.Cho, H.J.Choi, Y.S.Chung, J.M.Lee, S.Kim, H.K.Kim, J.H.Eom, C.Y.Kim, Y.G.Guo, M.Jung, H.S.Kang, B.S.Kim, S.

(2015) J.Biol.Chem. 290: 29313-29328

  • DOI: 10.1074/jbc.M115.690867
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Many multicomponent protein complexes mediating diverse cellular processes are assembled through scaffolds with specialized protein interaction modules. The multi-tRNA synthetase complex (MSC), consisting of nine different aminoacyl-tRNA synthetases ...

    Many multicomponent protein complexes mediating diverse cellular processes are assembled through scaffolds with specialized protein interaction modules. The multi-tRNA synthetase complex (MSC), consisting of nine different aminoacyl-tRNA synthetases and three non-enzymatic factors (AIMP1-3), serves as a hub for many signaling pathways in addition to its role in protein synthesis. However, the assembly process and structural arrangement of the MSC components are not well understood. Here we show the heterotetrameric complex structure of the glutathione transferase (GST) domains shared among the four MSC components, methionyl-tRNA synthetase (MRS), glutaminyl-prolyl-tRNA synthetase (EPRS), AIMP2 and AIMP3. The MRS-AIMP3 and EPRS-AIMP2 using interface 1 are bridged via interface 2 of AIMP3 and EPRS to generate a unique linear complex of MRS-AIMP3:EPRS-AIMP2 at the molar ratio of (1:1):(1:1). Interestingly, the affinity at interface 2 of AIMP3:EPRS can be varied depending on the occupancy of interface 1, suggesting the dynamic nature of the linear GST tetramer. The four components are optimally arranged for maximal accommodation of additional domains and proteins. These characteristics suggest the GST tetramer as a unique and dynamic structural platform from which the MSC components are assembled. Considering prevalence of the GST-like domains, this tetramer can also provide a tool for the communication of the MSC with other GST-containing cellular factors.


    Organizational Affiliation

    From the School of Life Science and Biotechnology, KNU Creative BioResearch Group, Kyungpook National University, Daegu 702-701, Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation elongation factor 1 epsilon-1
A, C, E, G
171Homo sapiensMutation(s): 0 
Gene Names: EEF1E1 (AIMP3, P18)
Find proteins for O43324 (Homo sapiens)
Go to Gene View: EEF1E1
Go to UniProtKB:  O43324
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Glutamate--tRNA ligase
B, D, F, H
175Homo sapiensMutation(s): 3 
Gene Names: EPRS (GLNS, PARS, QARS, QPRS)
Find proteins for P07814 (Homo sapiens)
Go to Gene View: EPRS
Go to UniProtKB:  P07814
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.170 
  • R-Value Work: 0.138 
  • Space Group: P 31
Unit Cell:
Length (Å)Angle (°)
a = 92.063α = 90.00
b = 92.063β = 90.00
c = 185.948γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
Cootmodel building
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-05-23 
  • Released Date: 2015-10-21 
  • Deposition Author(s): Cho, H.J., Kang, B.S.

Revision History 

  • Version 1.0: 2015-10-21
    Type: Initial release
  • Version 1.1: 2015-10-28
    Type: Database references
  • Version 1.2: 2015-12-16
    Type: Database references