1HTT

HISTIDYL-TRNA SYNTHETASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.246 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of histidyl-tRNA synthetase from Escherichia coli complexed with histidyl-adenylate.

Arnez, J.G.Harris, D.C.Mitschler, A.Rees, B.Francklyn, C.S.Moras, D.

(1995) EMBO J. 14: 4143-4155


  • PubMed Abstract: 
  • The crystal structure at 2.6 A of the histidyl-tRNA synthetase from Escherichia coli complexed with histidyl-adenylate has been determined. The enzyme is a homodimer with a molecular weight of 94 kDa and belongs to the class II of aminoacyl-tRNA synt ...

    The crystal structure at 2.6 A of the histidyl-tRNA synthetase from Escherichia coli complexed with histidyl-adenylate has been determined. The enzyme is a homodimer with a molecular weight of 94 kDa and belongs to the class II of aminoacyl-tRNA synthetases (aaRS). The asymmetric unit is composed of two homodimers. Each monomer consists of two domains. The N-terminal catalytic core domain contains a six-stranded antiparallel beta-sheet sitting on two alpha-helices, which can be superposed with the catalytic domains of yeast AspRS, and GlyRS and SerRS from Thermus thermophilus with a root-mean-square difference on the C alpha atoms of 1.7-1.9 A. The active sites of all four monomers are occupied by histidyl-adenylate, which apparently forms during crystallization. The 100 residue C-terminal alpha/beta domain resembles half of a beta-barrel, and provides an independent domain oriented to contact the anticodon stem and part of the anticodon loop of tRNA(His). The modular domain organization of histidyl-tRNA synthetase reiterates a repeated theme in aaRS, and its structure should provide insight into the ability of certain aaRS to aminoacylate minihelices and other non-tRNA molecules.


    Related Citations: 
    • Crystallization of Histidyl-tRNA Synthetase from Escherichia Coli
      Francklyn, C.,Harris, D.,Moras, D.
      (1994) J.Mol.Biol. 241: 275
    • Primary Structure of Histidine-tRNA Synthetase and Characterization of Hiss Transcripts
      Freedman, R.,Gibson, B.,Donovan, D.,Biemann, K.,Eisenbeis, S.,Parker, J.,Schimmel, P.
      (1985) J.Biol.Chem. 260: 10063


    Organizational Affiliation

    INSERM/ULP BP 163, Illkirch, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HISTIDYL-TRNA SYNTHETASE
A, B, C, D
423Escherichia coli (strain K12)Gene Names: hisS
EC: 6.1.1.21
Find proteins for P60906 (Escherichia coli (strain K12))
Go to UniProtKB:  P60906
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AMP
Query on AMP

Download SDF File 
Download CCD File 
A, B, C, D
ADENOSINE MONOPHOSPHATE
C10 H14 N5 O7 P
UDMBCSSLTHHNCD-KQYNXXCUSA-N
 Ligand Interaction
HIS
Query on HIS

Download SDF File 
Download CCD File 
A, B, C, D
HISTIDINE
C6 H10 N3 O2
HNDVDQJCIGZPNO-YFKPBYRVSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.246 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 61.400α = 115.00
b = 110.700β = 97.40
c = 108.700γ = 90.00
Software Package:
Software NamePurpose
MARXDSdata reduction
AGROVATAdata scaling
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-01-27
    Type: Initial release
  • Version 1.1: 2008-03-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance