3LO0 | pdb_00003lo0

Crystal structure of inorganic pyrophosphatase from Ehrlichia chaffeensis

• PDB DOI: https://doi.org/10.2210/pdb3LO0/pdb

• Classification: HYDROLASE
• Organism(s): Ehrlichia chaffeensis str. Arkansas
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-02-03 Released: 2010-02-16 
• Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 
  0.261 (Depositor), 0.260 (DCC) 
• R-Value Work: 
  0.211 (Depositor), 0.210 (DCC) 
• R-Value Observed: 
  0.213 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of inorganic pyrophosphatase from Ehrlichia chaffeensis

Abendroth, J., Sankaran, B., Staker, B.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content 

• Total Structure Weight: 21.82 kDa 
• Atom Count: 1,276 
• Modeled Residue Count: 156 
• Deposited Residue Count: 193 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Inorganic pyrophosphatase	A	193	Ehrlichia chaffeensis str. Arkansas	Mutation(s): 0  Gene Names: ppa, ECH_1014 EC: 3.6.1.1
UniProt
Find proteins for Q2GFI3 (Ehrlichia chaffeensis (strain ATCC CRL-10679 / Arkansas)) Explore Q2GFI3  Go to UniProtKB:  Q2GFI3

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free:  0.261 (Depositor), 0.260 (DCC) 
• R-Value Work:  0.211 (Depositor), 0.210 (DCC) 
• R-Value Observed: 0.213 (Depositor) 

Diffraction Data: https://doi.org/10.18430/M33LO0

Space Group: H 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.71	α = 90
b = 69.71	β = 90
c = 172.07	γ = 120

Software Package:

Software Name	Purpose
BOS	data collection
PHASER	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-02-16 
Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History  

• Version 1.0: 2010-02-16
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-09-06
  Changes: Data collection, Database references, Derived calculations, Refinement description