3H7M

Crystal Structure of a Histidine Kinase Sensor Domain with Similarity to Periplasmic Binding Proteins

• PDB DOI: https://doi.org/10.2210/pdb3H7M/pdb

• Classification: TRANSFERASE
• Organism(s): Geobacter sulfurreducens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-04-27 Released: 2009-06-30 
• Deposition Author(s): Cheung, J., Le-Khac, M., Hendrickson, W.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.285 
• R-Value Work: 0.228 

Literature

Crystal structure of a histidine kinase sensor domain with similarity to periplasmic binding proteins.

Cheung, J., Le-Khac, M., Hendrickson, W.A.

(2009) Proteins 77: 235-241

• PubMed: 19544572 
• DOI: https://doi.org/10.1002/prot.22485
• Primary Citation of Related Structures:  
  3H7M

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 25.98 kDa 
• Atom Count: 1,951 
• Modelled Residue Count: 228 
• Deposited Residue Count: 234 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sensor protein	A	234	Geobacter sulfurreducens	Mutation(s): 0  Gene Names: GSU2755 EC: 2.7.13.3
UniProt
Find proteins for Q749I7 (Geobacter sulfurreducens (strain ATCC 51573 / DSM 12127 / PCA)) Explore Q749I7  Go to UniProtKB:  Q749I7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NA	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.285 
• R-Value Work: 0.228 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 122.92	α = 90
b = 122.92	β = 90
c = 81.692	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing
DM	phasing
CNS	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-06-30 
Deposition Author(s): Cheung, J., Le-Khac, M., Hendrickson, W.A.

Revision History  

• Version 1.0: 2009-06-30
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description
• Version 1.3: 2024-02-21
  Changes: Data collection, Database references, Derived calculations