4DDD | pdb_00004ddd

Crystal structure of an immunogenic protein from ehrlichia chaffeensis

• PDB DOI: https://doi.org/10.2210/pdb4DDD/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Ehrlichia chaffeensis str. Arkansas
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2012-01-18 Released: 2012-05-23 
• Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.188 (Depositor), 0.175 (DCC) 
• R-Value Work: 
  0.159 (Depositor) 
• R-Value Observed: 
  0.161 (Depositor) 

Literature

Crystal structure of an immunogenic protein from ehrlichia chaffeensis

Seattle Structural Genomics Center for Infectious Disease (SSGCID), Abendroth, J., Gardberg, A.S., Staker, B.L.

To be published.

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: 36.4 kDa 
• Atom Count: 2,706 
• Modeled Residue Count: 300 
• Deposited Residue Count: 327 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Immunogenic protein	A	327	Ehrlichia chaffeensis str. Arkansas	Mutation(s): 0  Gene Names: ECH_0645
UniProt
Find proteins for Q2GGH8 (Ehrlichia chaffeensis (strain ATCC CRL-10679 / Arkansas)) Explore Q2GGH8  Go to UniProtKB:  Q2GGH8

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	F [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
EDO	C [auth A], D [auth A], E [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CL	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.188 (Depositor), 0.175 (DCC) 
• R-Value Work:  0.159 (Depositor) 
• R-Value Observed: 0.161 (Depositor) 

Diffraction Data: https://doi.org/10.18430/M34DDD

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.71	α = 90
b = 65.44	β = 90
c = 90.97	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-05-23 
Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History  

• Version 1.0: 2012-05-23
  Type: Initial release
  
• Version 1.1: 2024-11-20
  Changes: Data collection, Database references, Derived calculations, Structure summary