2OB3

Structure of Phosphotriesterase mutant H257Y/L303T

• PDB DOI: https://doi.org/10.2210/pdb2OB3/pdb

• Classification: HYDROLASE
• Organism(s): Brevundimonas diminuta
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2006-12-18 Released: 2007-01-30 
• Deposition Author(s): Kim, J., Ramagopal, U.A., Tsai, P., Raushel, F.M., Almo, S.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.04 Å
• R-Value Free: 0.127 
• R-Value Work: 0.105 
• R-Value Observed: 0.105 

Starting Model: experimental

Literature

Structure of Phosphotriesterase mutant H257Y/L303T

Kim, J., Ramagopal, U.A., Tsai, P., Raushel, F.M., Almo, S.C.

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: 72.45 kDa 
• Atom Count: 6,065 
• Modelled Residue Count: 660 
• Deposited Residue Count: 660 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Parathion hydrolase	A, B	330	Brevundimonas diminuta	Mutation(s): 2  Gene Names: opd EC: 3.1.8.1
UniProt
Find proteins for P0A434 (Brevundimonas diminuta) Explore P0A434  Go to UniProtKB:  P0A434

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BTB	E [auth A], H [auth B]	2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C8 H19 N O5 OWMVSZAMULFTJU-UHFFFAOYSA-N
ZN	C [auth A], D [auth A], F [auth B], G [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
KCX	A, B	L-PEPTIDE LINKING	C7 H14 N2 O4		LYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.04 Å
• R-Value Free: 0.127 
• R-Value Work: 0.105 
• R-Value Observed: 0.105 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.362	α = 104.86
b = 45.374	β = 93.27
c = 79.211	γ = 97.81

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHELX	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-01-30 
Deposition Author(s): Kim, J., Ramagopal, U.A., Tsai, P., Raushel, F.M., Almo, S.C.

Revision History  

• Version 1.0: 2007-01-30
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description
• Version 1.4: 2021-10-20
  Changes: Database references, Derived calculations
• Version 1.5: 2023-08-30
  Changes: Data collection, Refinement description
• Version 1.6: 2023-11-15
  Changes: Data collection