2EQ5

Crystal structure of hydantoin racemase from Pyrococcus horikoshii OT3

• PDB DOI: https://doi.org/10.2210/pdb2EQ5/pdb

• Classification: ISOMERASE
• Organism(s): Pyrococcus horikoshii OT3
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2007-03-30 Released: 2007-10-02 
• Deposition Author(s): Mizutani, H., Kunishima, N., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.222 
• R-Value Work: 0.160 
• R-Value Observed: 0.160 

Literature

Crystal structure of hydantoin racemase from Pyrococcus horikoshii OT3

Mizutani, H., Kunishima, N.

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.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 100.08 kDa 
• Atom Count: 6,861 
• Modelled Residue Count: 844 
• Deposited Residue Count: 912 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
228aa long hypothetical hydantoin racemase	A, B, C, D	228	Pyrococcus horikoshii OT3	Mutation(s): 0  EC: 5.1
UniProt
Find proteins for O58781 (Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3)) Explore O58781  Go to UniProtKB:  O58781

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.222 
• R-Value Work: 0.160 
• R-Value Observed: 0.160 
• Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 152.707	α = 90
b = 152.707	β = 90
c = 81.257	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-10-02 
Deposition Author(s): Mizutani, H., Kunishima, N., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

Revision History  

• Version 1.0: 2007-10-02
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2024-03-13
  Changes: Data collection, Database references