1ZKE

1.6 A Crystal Structure of a Protein HP1531 of Unknown Function from Helicobacter pylori

• PDB DOI: https://doi.org/10.2210/pdb1ZKE/pdb

• Classification: STRUCTURAL GENOMICS, UNKNOWN FUNCTION
• Organism(s): Helicobacter pylori 26695
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2005-05-02 Released: 2005-06-28 
• Deposition Author(s): Zhang, R., Skarina, T., Savchenko, A., Edwards, A., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.232 
• R-Value Work: 0.198 
• R-Value Observed: 0.200 

Literature

1.6A crystal structure of a hypothetical protein HP1531 from Helicobacter pylori 26695

Zhang, R., Skarina, T., Savchenko, A., Edwards, A., Joachimiak, A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 3 assigned by authors and generated by PISA (software)

Biological Assembly 4  

Global Symmetry: Dihedral - D3  (Explore in 3D)
Global Stoichiometry: Homo 6-mer - A6 

Biological assembly 4 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 56.8 kDa 
• Atom Count: 4,687 
• Modelled Residue Count: 492 
• Deposited Residue Count: 498 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hypothetical protein HP1531	A, B, C, D, E, F	83	Helicobacter pylori 26695	Mutation(s): 0  Gene Names: GI:15646139
UniProt
Find proteins for P64665 (Helicobacter pylori (strain ATCC 700392 / 26695)) Explore P64665  Go to UniProtKB:  P64665

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MG	G [auth B], H [auth C], I [auth D], J [auth E]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.232 
• R-Value Work: 0.198 
• R-Value Observed: 0.200 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.156	α = 90
b = 73.262	β = 90
c = 135.425	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-06-28 
Deposition Author(s): Zhang, R., Skarina, T., Savchenko, A., Edwards, A., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2005-06-28
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Source and taxonomy, Version format compliance
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references, Derived calculations