Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 93.23 kDa 
• Atom Count: 6741 
• Modelled Residue Count: 852 
• Deposited Residue Count: 878 
• Unique protein chains: 2

1OFU

Crystal structure of SulA:FtsZ from Pseudomonas aeruginosa

• PDB DOI: 10.2210/pdb1OFU/pdb

• Classification: BACTERIAL CELL DIVISION INHIBITOR
• Organism(s): Pseudomonas aeruginosa
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-04-21 Released: 2003-06-19 
• Deposition Author(s): Cordell, S.C., Robinson, E.J.H., Lowe, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.255 
• R-Value Work: 0.216 
• R-Value Observed: 0.216 

Literature

Crystal Structure of the SOS Cell Division Inhibitor Sula and in Complex with Ftsz

Cordell, S.C., Robinson, E.J.H., Lowe, J.

(2003) Proc Natl Acad Sci U S A 100: 7889

• PubMed: 12808143 
• DOI: 10.1073/pnas.1330742100
• Primary Citation of Related Structures:  
  1OFT, 1OFU


• PubMed Abstract: 
  

SulA halts cell division in Escherichia coli by binding to the major component of the division machinery FtsZ. We have solved the crystal structure of SulA alone and in complex with FtsZ from Pseudomonas aeruginosa. SulA is expressed when the SOS response is induced. This is a mechanism to inhibit cell division and repair DNA in the event of DNA damage. FtsZ is a tubulin-like protein that forms polymers, with the active-site GTPase split across two monomers. One monomer provides the GTP-binding site and the other, through its T7 loop nucleotide hydrolysis. Our structures show that SulA is a dimer, and that SulA inhibits cell division neither by binding the nucleotide-binding site nor by inducing conformational changes in FtsZ. Instead, SulA binds the T7 loop surface of FtsZ, opposite the nucleotide-binding site, blocking polymer formation. These findings explain why GTP hydrolysis and polymer turnover are required for SulA inhibition.

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Organizational Affiliation: 

Medical Research Council, Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CELL DIVISION PROTEIN FTSZ	A, B	320	Pseudomonas aeruginosa	Mutation(s): 0
UniProt
Find proteins for P47204 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore P47204  Go to UniProtKB:  P47204

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
HYPOTHETICAL PROTEIN PA3008	C [auth X], D [auth Y]	119	Pseudomonas aeruginosa	Mutation(s): 0
UniProt
Find proteins for Q9HZJ8 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9HZJ8  Go to UniProtKB:  Q9HZJ8

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GDP	E [auth A], F [auth B]	GUANOSINE-5'-DIPHOSPHATE C10 H15 N5 O11 P2 QGWNDRXFNXRZMB-UUOKFMHZSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.255 
• R-Value Work: 0.216 
• R-Value Observed: 0.216 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.59	α = 90
b = 75.41	β = 90
c = 241.04	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-04-21 
• Released Date: 2003-06-19 
Deposition Author(s): Cordell, S.C., Robinson, E.J.H., Lowe, J.

Revision History  

• Version 1.0: 2003-06-19
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance