› 3hyx

X-ray diffraction
2.9Å resolution

3-D X-Ray structure of the sulfide:quinone oxidoreductase from Aquifex aeolicus in complex with Aurachin C

Released:
DOI: 10.2210/pdb3hyx/pdb
PDB entry 3hyx coloured by chain, front view.
PDB entry 3hyx coloured by chain, side view.
PDB entry 3hyx coloured by chain, top view.
Source organism: Aquifex aeolicus
Primary publication:
The structure of Aquifex aeolicus sulfide:quinone oxidoreductase, a basis to understand sulfide detoxification and respiration.
Marcia M, Ermler U, Peng G, Michel H
Proc Natl Acad Sci U S A 106 9625-30 (2009)
PMID: 19487671

Function and Biology Details

Reaction catalysed: 
n sulfide + n quinone = polysulfide + n quinol
Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assemblies composition:
homo trimer
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-130590 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Sulfide-quinone reductase Chains: A, B, C, D, E, F
Molecule details ›
Chains: A, B, C, D, E, F
Length: 430 amino acids
Theoretical weight: 47.53 KDa
Source organism: Aquifex aeolicus
UniProt:
  • Canonical: O67931 (Residues: 1-430; Coverage: 100%)
Gene names: aq_2186, sqr
Sequence domains: Pyridine nucleotide-disulphide oxidoreductase
Structure domains: FAD/NAD(P)-binding domain

Ligands and Environments


Cofactor: Ligand FAD 6 x FAD
5 bound ligands:
Ligand SO4 24 x SO4
Ligand AUK 6 x AUK
Ligand LMT 6 x LMT
Ligand H2S 6 x H2S
Ligand PS9 6 x PS9
1 modified residue:
Ligand CSS 6 x CSS

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X10SA
Spacegroup: P212121
Unit cell:
a: 111.18Å b: 154.23Å c: 176.53Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.184 0.181 0.24

Quick links

Citations

16 review citations

Chemical Biology of H2S Signaling through Persulfidation.
Filipovic et al. (2018)
15 more

1 mention without citation

Transient Kinetic Analysis of Hydrogen Sulfide Oxidation Catalyzed by Human Sulfide Quinone Oxidoreductase.
Mishanina et al. (2015)