ISDA

Deposition Date 2009-03-24

Release Date 2009-06-16

Last Version Date 2023-12-13

Entry Detail

PDB ID:

2WDE

Keywords:

HYDROLASE

Title:

Termus thermophilus Sulfate thiohydrolase SoxB in complex with thiosulfate

Biological Source:

Source Organism:

THERMUS THERMOPHILUS (Taxon ID: 262724)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.85 Å

R-Value Free:

0.22

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:SULFUR OXIDATION PROTEIN SOXB
Gene (Uniprot):soxB
Chain IDs:A
Chain Length:562
Number of Molecules:1
Biological Source:THERMUS THERMOPHILUS

UniProt ID:Q72IT0 Pfam ID:PF02872 EC:3.1.6.20

Ligand Molecules

TBU

THJ

Primary Citation

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.Show

J.Biol.Chem. 284 21707 ? (2009)

PMID: 19535341 DOI: 10.1074/JBC.M109.002709

Abstact

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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