2WDE

Termus thermophilus Sulfate thiohydrolase SoxB in complex with thiosulfate

• PDB DOI: https://doi.org/10.2210/pdb2WDE/pdb

• Classification: HYDROLASE
• Organism(s): Thermus thermophilus HB27
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-03-24 Released: 2009-06-16 
• Deposition Author(s): Sauve, V., Roversi, P., Leath, K.J., Garman, E.F., Antrobus, R., Lea, S.M., Berks, B.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.224 
• R-Value Work: 0.185 
• R-Value Observed: 0.187 

Starting Model: experimental

Literature

Mechanism for the Hydrolysis of a Sulfur-Sulfur Bond Based on the Crystal Structure of the Thiosulfohydrolase Soxb.

Sauve, V., Roversi, P., Leath, K.J., Garman, E.F., Antrobus, R., Lea, S.M., Berks, B.C.

(2009) J Biol Chem 284: 21707

• PubMed: 19535341 
• DOI: https://doi.org/10.1074/jbc.M109.002709
• Primary Citation of Related Structures:  
  2WDC, 2WDD, 2WDE, 2WDF


• PubMed Abstract: 
  

  SoxB is an essential component of the bacterial Sox sulfur oxidation pathway. SoxB contains a di-manganese(II) site and is proposed to catalyze the release of sulfate from a protein-bound cysteine S-thiosulfonate. A direct assay for SoxB activity is described. The structure of recombinant Thermus thermophilus SoxB was determined by x-ray crystallography to a resolution of 1.5 A. Structures were also determined for SoxB in complex with the substrate analogue thiosulfate and in complex with the product sulfate. A mechanistic model for SoxB is proposed based on these structures.

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Organizational Affiliation: 

Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 63.27 kDa 
• Atom Count: 4,840 
• Modelled Residue Count: 545 
• Deposited Residue Count: 562 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SULFUR OXIDATION PROTEIN SOXB	A	562	Thermus thermophilus HB27	Mutation(s): 0
UniProt
Find proteins for Q72IT0 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27)) Explore Q72IT0  Go to UniProtKB:  Q72IT0

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
THJ	H [auth A]	THIOSULFATE O3 S2 DHCDFWKWKRSZHF-UHFFFAOYSA-L
TBU	B [auth A], C [auth A], D [auth A], E [auth A]	TERTIARY-BUTYL ALCOHOL C4 H10 O DKGAVHZHDRPRBM-UHFFFAOYSA-N
MN	F [auth A], G [auth A]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.224 
• R-Value Work: 0.185 
• R-Value Observed: 0.187 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.801	α = 90
b = 86.738	β = 90
c = 95.383	γ = 90

Software Package:

Software Name	Purpose
BUSTER-TNT	refinement
XPREP	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-06-16 
Deposition Author(s): Sauve, V., Roversi, P., Leath, K.J., Garman, E.F., Antrobus, R., Lea, S.M., Berks, B.C.

Revision History  

• Version 1.0: 2009-06-16
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-07-05
  Changes: Data collection
• Version 1.4: 2023-12-13
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description