1NYL

Unliganded glutaminyl-tRNA synthetase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

tRNA-Dependent Active Site Assembly in a Class I Aminoacyl-tRNA Synthetase.

Sherlin, L.D.Perona, J.J.

(2003) Structure 11: 591-603


  • PubMed Abstract: 
  • The crystal structure of ligand-free E. coli glutaminyl-tRNA synthetase (GlnRS) at 2.4 A resolution shows that substrate binding is essential to construction of a catalytically proficient active site. tRNA binding generates structural changes through ...

    The crystal structure of ligand-free E. coli glutaminyl-tRNA synthetase (GlnRS) at 2.4 A resolution shows that substrate binding is essential to construction of a catalytically proficient active site. tRNA binding generates structural changes throughout the enzyme, repositioning key active site peptides that bind glutamine and ATP. The structure gives insight into longstanding questions regarding the tRNA dependence of glutaminyl adenylate formation, the coupling of amino acid and tRNA selectivities, and the roles of specific pathways for transmission of tRNA binding signals to the active site. Comparative analysis of the unliganded and tRNA-bound structures shows, in detail, how flexibility is built into the enzyme architecture and suggests that the induced-fit transitions are a key underlying determinant of both amino acid and tRNA specificity.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glutaminyl-tRNA synthetase
A
539Escherichia coli (strain K12)Gene Names: glnS
EC: 6.1.1.18
Find proteins for P00962 (Escherichia coli (strain K12))
Go to UniProtKB:  P00962
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.251 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 41.400α = 90.00
b = 64.120β = 90.00
c = 208.880γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-02-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance