4R3Z

Crystal structure of human ArgRS-GlnRS-AIMP1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.033 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the ArgRS-GlnRS-AIMP1 complex and its implications for mammalian translation

Fu, Y.Kim, Y.Jin, K.S.Kim, H.S.Kim, J.H.Wang, D.M.Park, M.Jo, C.H.Kwon, N.H.Kim, D.Kim, M.H.Jeon, Y.H.Hwang, K.Y.Kim, S.Cho, Y.

(2014) Proc.Natl.Acad.Sci.USA 111: 15084-15089

  • DOI: 10.1073/pnas.1408836111

  • PubMed Abstract: 
  • In higher eukaryotes, one of the two arginyl-tRNA synthetases (ArgRSs) has evolved to have an extended N-terminal domain that plays a crucial role in protein synthesis and cell growth and in integration into the multisynthetase complex (MSC). Here, w ...

    In higher eukaryotes, one of the two arginyl-tRNA synthetases (ArgRSs) has evolved to have an extended N-terminal domain that plays a crucial role in protein synthesis and cell growth and in integration into the multisynthetase complex (MSC). Here, we report a crystal structure of the MSC subcomplex comprising ArgRS, glutaminyl-tRNA synthetase (GlnRS), and the auxiliary factor aminoacyl tRNA synthetase complex-interacting multifunctional protein 1 (AIMP1)/p43. In this complex, the N-terminal domain of ArgRS forms a long coiled-coil structure with the N-terminal helix of AIMP1 and anchors the C-terminal core of GlnRS, thereby playing a central role in assembly of the three components. Mutation of AIMP1 destabilized the N-terminal helix of ArgRS and abrogated its catalytic activity. Mutation of the N-terminal helix of ArgRS liberated GlnRS, which is known to control cell death. This ternary complex was further anchored to AIMP2/p38 through interaction with AIMP1. These findings demonstrate the importance of interactions between the N-terminal domains of ArgRS and AIMP1 for the catalytic and noncatalytic activities of ArgRS and for the assembly of the higher-order MSC protein complex.


    Organizational Affiliation

    Department of Life Science and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aminoacyl tRNA synthase complex-interacting multifunctional protein 1
A
312Homo sapiensMutation(s): 0 
Gene Names: AIMP1 (EMAP2, SCYE1)
Find proteins for Q12904 (Homo sapiens)
Go to Gene View: AIMP1
Go to UniProtKB:  Q12904
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Arginine--tRNA ligase, cytoplasmic
B
675Homo sapiensMutation(s): 0 
Gene Names: RARS
EC: 6.1.1.19
Find proteins for P54136 (Homo sapiens)
Go to Gene View: RARS
Go to UniProtKB:  P54136
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Glutamine--tRNA ligase
C
799Homo sapiensMutation(s): 0 
Gene Names: QARS
EC: 6.1.1.18
Find proteins for P47897 (Homo sapiens)
Go to Gene View: QARS
Go to UniProtKB:  P47897
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.033 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.229 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 102.645α = 90.00
b = 313.253β = 90.00
c = 161.759γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2014-08-18 
  • Released Date: 2014-10-08 
  • Deposition Author(s): Fu, Y., Kim, Y., Cho, Y.

Revision History 

  • Version 1.0: 2014-10-08
    Type: Initial release
  • Version 1.1: 2014-10-15
    Type: Structure summary
  • Version 1.2: 2014-10-29
    Type: Database references