4ICG

N-terminal dimerization domain of H-NS in complex with Hha (Salmonella Typhimurium)

• PDB DOI: https://doi.org/10.2210/pdb4ICG/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-12-10 Released: 2013-03-27 
• Deposition Author(s): Ali, S.S., Whitney, J.C., Stevenson, J., Robinson, H., Howell, P.L., Navarre, W.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.92 Å
• R-Value Free: 0.332 
• R-Value Work: 0.277 
• R-Value Observed: 0.283 

Literature

Structural Insights into the Regulation of Foreign Genes in Salmonella by the Hha/H-NS Complex.

Ali, S.S., Whitney, J.C., Stevenson, J., Robinson, H., Howell, P.L., Navarre, W.W.

(2013) J Biol Chem 288: 13356-13369

• PubMed: 23515315 
• DOI: https://doi.org/10.1074/jbc.M113.455378
• Primary Citation of Related Structures:  
  4ICG


• PubMed Abstract: 
  

  Hha facilitates H-NS-mediated silencing of foreign genes in bacteria.

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Organizational Affiliation: 

Departments of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 29.02 kDa 
• Atom Count: 1,688 
• Modelled Residue Count: 223 
• Deposited Residue Count: 242 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA-binding protein H-NS	A [auth B], C [auth A]	46	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0  Gene Names: hns, hnsA, osmZ, STM1751, STMUK_1724
UniProt
Find proteins for P0A1S2 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P0A1S2  Go to UniProtKB:  P0A1S2

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemolysin expression modulating protein (Involved in environmental regulation of virulence factors)	B [auth C], D	75	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0  Gene Names: hha, STM0473, STMUK_0480
UniProt
Find proteins for Q7CR17 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore Q7CR17  Go to UniProtKB:  Q7CR17

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A [auth B], C [auth A]	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.92 Å
• R-Value Free: 0.332 
• R-Value Work: 0.277 
• R-Value Observed: 0.283 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 77.88	α = 90
b = 82.9	β = 90
c = 47.13	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SOLVE	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-03-27 
Deposition Author(s): Ali, S.S., Whitney, J.C., Stevenson, J., Robinson, H., Howell, P.L., Navarre, W.W.

Revision History  

• Version 1.0: 2013-03-27
  Type: Initial release
  
• Version 1.1: 2013-04-10
  Changes: Database references
• Version 1.2: 2013-05-29
  Changes: Database references
• Version 1.3: 2016-05-18
  Changes: Database references