1ZUN

Crystal Structure of a GTP-Regulated ATP Sulfurylase Heterodimer from Pseudomonas syringae


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular basis for g protein control of the prokaryotic ATP sulfurylase.

Mougous, J.D.Lee, D.H.Hubbard, S.C.Schelle, M.W.Vocadlo, D.J.Berger, J.M.Bertozzi, C.R.

(2006) Mol.Cell 21: 109-122

  • DOI: 10.1016/j.molcel.2005.10.034

  • PubMed Abstract: 
  • Sulfate assimilation is a critical component of both primary and secondary metabolism. An essential step in this pathway is the activation of sulfate through adenylation by the enzyme ATP sulfurylase (ATPS), forming adenosine 5'-phosphosulfate (APS). ...

    Sulfate assimilation is a critical component of both primary and secondary metabolism. An essential step in this pathway is the activation of sulfate through adenylation by the enzyme ATP sulfurylase (ATPS), forming adenosine 5'-phosphosulfate (APS). Proteobacterial ATPS overcomes this energetically unfavorable reaction by associating with a regulatory G protein, coupling the energy of GTP hydrolysis to APS formation. To discover the molecular basis of this unusual role for a G protein, we biochemically characterized and solved the X-ray crystal structure of a complex between Pseudomonas syringae ATPS (CysD) and its associated regulatory G protein (CysN). The structure of CysN*D shows the two proteins in tight association; however, the nucleotides bound to each subunit are spatially segregated. We provide evidence that conserved switch motifs in the G domain of CysN allosterically mediate interactions between the nucleotide binding sites. This structure suggests a molecular mechanism by which conserved G domain architecture is used to energetically link GTP turnover to the production of an essential metabolite.


    Organizational Affiliation

    Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, California 94720, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sulfate adenylyltransferase subunit 2
A
325Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000)Mutation(s): 0 
Gene Names: cysD
EC: 2.7.7.4
Find proteins for Q87WW0 (Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000))
Go to UniProtKB:  Q87WW0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
sulfate adenylate transferase, subunit 1/adenylylsulfate kinase
B
434Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000)Mutation(s): 0 
Gene Names: C (cysN)
EC: 2.7.7.4
Find proteins for Q87WW1 (Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000))
Go to UniProtKB:  Q87WW1
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

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Download CCD File 
B
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
NA
Query on NA

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Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
AGS
Query on AGS

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Download CCD File 
A
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
ATP-GAMMA-S; ADENOSINE 5'-(3-THIOTRIPHOSPHATE); ADENOSINE 5'-(GAMMA-THIOTRIPHOSPHATE); ADENOSINE-5'-DIPHOSPHATE MONOTHIOPHOSPHATE
C10 H16 N5 O12 P3 S
NLTUCYMLOPLUHL-KQYNXXCUSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.222 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 110.072α = 90.00
b = 110.072β = 90.00
c = 171.002γ = 120.00
Software Package:
Software NamePurpose
SOLVEphasing
HKL-2000data reduction
SCALEPACKdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-01-17
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance