3K7D

C-terminal (adenylylation) domain of E.coli Glutamine Synthetase Adenylyltransferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the Adenylylation Domain of E. coli Glutamine Synthetase Adenylyl Transferase: Evidence for Gene Duplication and Evolution of a New Active Site.

Xu, Y.Carr, P.D.Vasudevan, S.G.Ollis, D.L.

(2010) J.Mol.Biol. 396: 773-784

  • DOI: 10.1016/j.jmb.2009.12.011

  • PubMed Abstract: 
  • The X-ray structure of the C-terminal fragment, containing residues 449-946, of Escherichia coli glutamine synthetase adenylyl transferase (ATase) has been determined. ATase is part of the cascade that regulates the enzymatic activity of E. coli glut ...

    The X-ray structure of the C-terminal fragment, containing residues 449-946, of Escherichia coli glutamine synthetase adenylyl transferase (ATase) has been determined. ATase is part of the cascade that regulates the enzymatic activity of E. coli glutamine synthetase, a key component of the cell's machinery for the uptake of ammonia. It has two enzymatic activities, adenylyl removase (AR) and adenylyl transferase (AT), which are located in distinct catalytic domains that are separated by a regulatory (R) domain. We previously reported the three-dimensional structure of the AR domain (residues 1-440). The present structure contains both the R and AT domains. AR and AT share 24% sequence identity and also contain the beta-polymerase motif that is characteristic of many nucleotidylyl transferase enzymes. The structures overlap with an rmsd of 2.4 A when the superhelical R domain is omitted. A model for the complete ATase molecule is proposed, along with some refinements of domain boundaries. A rather more speculative model for the complex of ATase with glutamine synthetase and the nitrogen signal transduction protein PII is also presented.


    Organizational Affiliation

    Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glutamate-ammonia-ligase adenylyltransferase
A, B
498Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: glnE
Find proteins for P30870 (Escherichia coli (strain K12))
Go to UniProtKB:  P30870
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.183 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 72.542α = 90.00
b = 122.862β = 90.00
c = 143.618γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
PHASERphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-12-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description