3SIB

Crystal structure of URE3-binding protein, wild-type

• PDB DOI: https://doi.org/10.2210/pdb3SIB/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Entamoeba histolytica
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-06-17 Released: 2011-06-29 
• Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.190 
• R-Value Work: 0.159 
• R-Value Observed: 0.161 

Literature

Crystal structure of URE3-binding protein

Seattle Structural Genomics Center for Infectious Disease (SSGCID), Gardberg, A., Edwards, T., Staker, B., Skubak, P., Gilchrist, C., Stewart, L.

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: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 25.87 kDa 
• Atom Count: 1,890 
• Modelled Residue Count: 203 
• Deposited Residue Count: 220 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
URE3-BP sequence specific DNA binding protein	A	220	Entamoeba histolytica	Mutation(s): 0  Gene Names: URE3-BP
UniProt
Find proteins for Q9GSV7 (Entamoeba histolytica) Explore Q9GSV7  Go to UniProtKB:  Q9GSV7

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A], C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
NA	D [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.190 
• R-Value Work: 0.159 
• R-Value Observed: 0.161 
• Space Group: I 4 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 99.699	α = 90
b = 99.699	β = 90
c = 107.034	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-06-29 
Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History  

• Version 1.0: 2011-06-29
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-08
  Changes: Refinement description
• Version 1.3: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description