2R2C

Crystal structure of a domain of the outer membrane lipoprotein Omp28 from Porphyromonas gingivalis

• PDB DOI: https://doi.org/10.2210/pdb2R2C/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Porphyromonas gingivalis W83
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2007-08-24 Released: 2007-09-25 
• Deposition Author(s): Zhang, R., Hatzos, C., Moy, S., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.201 
• R-Value Work: 0.174 
• R-Value Observed: 0.175 

Literature

The crystal structure of a domain of the outer membrane lipoprotein Omp28 from Porphyromonas gingivalis.

Zhang, R., Hatzos, C., Moy, S., 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)

Macromolecule Content

• Total Structure Weight: 41.91 kDa 
• Atom Count: 2,196 
• Modelled Residue Count: 230 
• Deposited Residue Count: 366 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
28 kDa outer membrane protein Omp28	A, B	183	Porphyromonas gingivalis W83	Mutation(s): 0  Gene Names: omp28, PG_2173
UniProt
Find proteins for Q9S3Q1 (Porphyromonas gingivalis) Explore Q9S3Q1  Go to UniProtKB:  Q9S3Q1

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.201 
• R-Value Work: 0.174 
• R-Value Observed: 0.175 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 77.831	α = 90
b = 110.342	β = 90
c = 90.73	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-09-25 
Deposition Author(s): Zhang, R., Hatzos, C., Moy, S., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2007-09-25
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Source and taxonomy, Version format compliance
• Version 1.2: 2024-11-06
  Changes: Data collection, Database references, Derived calculations, Structure summary