2D16 | pdb_00002d16

Crystal Structure of PH1918 protein from Pyrococcus horikoshii OT3

• PDB DOI: https://doi.org/10.2210/pdb2D16/pdb

• Classification: STRUCTURAL GENOMICS, UNKNOWN FUNCTION
• Organism(s): Pyrococcus horikoshii OT3
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-08-14 Released: 2006-10-31 
• Deposition Author(s): Lokanath, N.K., Kunishima, N., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free: 
  0.204 (Depositor), 0.190 (DCC) 
• R-Value Work: 
  0.185 (Depositor), 0.180 (DCC) 
• R-Value Observed: 
  0.185 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of PH1918 protein from Pyrococcus horikoshii OT3

Lokanath, N.K., Kunishima, N.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 4-mer - A4 

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 generated by PISA,PQS (software)

Biological Assembly 3  

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

Biological assembly 3 generated by PQS (software)

Macromolecule Content 

• Total Structure Weight: 71.11 kDa 
• Atom Count: 5,572 
• Modeled Residue Count: 646 
• Deposited Residue Count: 648 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
hypothetical protein PH1918	A, B, C, D	162	Pyrococcus horikoshii OT3	Mutation(s): 0
UniProt
Find proteins for O59581 (Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3)) Explore O59581  Go to UniProtKB:  O59581

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	F [auth A], H [auth B], J [auth C], L [auth D]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
NA	E [auth A], G [auth B], I [auth C], K [auth D]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free:  0.204 (Depositor), 0.190 (DCC) 
• R-Value Work:  0.185 (Depositor), 0.180 (DCC) 
• R-Value Observed: 0.185 (Depositor) 

Space Group: P 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 66.12	α = 90
b = 66.12	β = 90
c = 125.072	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-10-31 
Deposition Author(s): Lokanath, N.K., Kunishima, N., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

Revision History  

• Version 1.0: 2006-10-31
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Source and taxonomy, Version format compliance
• Version 1.3: 2023-10-25
  Changes: Data collection, Database references, Derived calculations, Refinement description