1WZN

Crystal Structure of the SAM-dependent methyltransferase from Pyrococcus horikoshii OT3

• PDB DOI: https://doi.org/10.2210/pdb1WZN/pdb

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


• Deposited: 2005-03-08 Released: 2006-03-14 
• 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: 1.90 Å
• R-Value Free: 0.233 
• R-Value Work: 0.209 
• R-Value Observed: 0.209 

Literature

Crystal Structure of the SAM-dependent methyltransferase from Pyrococcus horikoshii OT3

Mizutani, H., Kunishima, N.

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,PQS (software)

Macromolecule Content

• Total Structure Weight: 91.19 kDa 
• Atom Count: 6,811 
• Modelled Residue Count: 732 
• Deposited Residue Count: 756 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SAM-dependent methyltransferase	A, B, C	252	Pyrococcus horikoshii OT3	Mutation(s): 0  EC: 2.1.1
UniProt
Find proteins for O59000 (Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3)) Explore O59000  Go to UniProtKB:  O59000

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAH	F [auth A], H [auth B], J [auth C]	S-ADENOSYL-L-HOMOCYSTEINE C14 H20 N6 O5 S ZJUKTBDSGOFHSH-WFMPWKQPSA-N
SO4	D [auth A], G [auth B], I [auth C]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
MG	E [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.233 
• R-Value Work: 0.209 
• R-Value Observed: 0.209 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 108.357	α = 90
b = 132.011	β = 90
c = 145.991	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-03-14 
Deposition Author(s): Mizutani, H., Kunishima, N., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

Revision History  

• Version 1.0: 2006-03-14
  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: 2024-03-13
  Changes: Data collection, Database references, Derived calculations