1QQT

METHIONYL-TRNA SYNTHETASE FROM ESCHERICHIA COLI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of Escherichia coli methionyl-tRNA synthetase highlights species-specific features.

Mechulam, Y.Schmitt, E.Maveyraud, L.Zelwer, C.Nureki, O.Yokoyama, S.Konno, M.Blanquet, S.

(1999) J.Mol.Biol. 294: 1287-1297

  • DOI: 10.1006/jmbi.1999.3339

  • PubMed Abstract: 
  • The 3D structure of monomeric C-truncated Escherichia coli methionyl-tRNA synthetase, a class 1 aminoacyl-tRNA synthetase, has been solved at 2.0 A resolution. Remarkably, the polypeptide connecting the two halves of the Rossmann fold exposes two ide ...

    The 3D structure of monomeric C-truncated Escherichia coli methionyl-tRNA synthetase, a class 1 aminoacyl-tRNA synthetase, has been solved at 2.0 A resolution. Remarkably, the polypeptide connecting the two halves of the Rossmann fold exposes two identical knuckles related by a 2-fold axis but with zinc in the distal knuckle only. Examination of available MetRS orthologs reveals four classes according to the number and zinc content of the putative knuckles. Extreme cases are exemplified by the MetRS of eucaryotic or archaeal origin, where two knuckles and two metal ions are expected, and by the mitochondrial enzymes, which are predicted to have one knuckle without metal ion.


    Organizational Affiliation

    Laboratoire de Biochimie, Ecole Polytechnique, CNRS UMR 7654, Palaiseau Cedex, F-91128, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
METHIONYL-TRNA SYNTHETASE
A
551Escherichia coli (strain K12)Gene Names: metG
EC: 6.1.1.10
Find proteins for P00959 (Escherichia coli (strain K12))
Go to UniProtKB:  P00959
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.170 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 78.150α = 90.00
b = 46.300β = 109.06
c = 87.700γ = 90.00
Software Package:
Software NamePurpose
ROTAVATAdata scaling
CCP4data scaling
X-PLORmodel building
X-PLORphasing
X-PLORrefinement
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-01-01
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description