› 3or1

X-ray diffraction
1.76Å resolution

Crystal structure of dissimilatory sulfite reductase I (DsrI)

Released:
DOI: 10.2210/pdb3or1/pdb
PDB entry 3or1 coloured by chain, front view.
PDB entry 3or1 coloured by chain, side view.
PDB entry 3or1 coloured by chain, top view.
Source organism: Megalodesulfovibrio gigas
Entry authors: Hsieh YC, Liu MY, Wang VCC, Chiang YL, Liu EH, Wu WG, Chan SI, Chen CJ

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
hetero hexamer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-122851 (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
4Fe-4S ferredoxin-type domain-containing protein Chains: A, D
Molecule details ›
Chains: A, D
Length: 437 amino acids
Theoretical weight: 49 KDa
Source organism: Megalodesulfovibrio gigas
UniProt:
  • Canonical: E2QR97 (Residues: 1-437; Coverage: 100%)
Sequence domains: Nitrite and sulphite reductase 4Fe-4S domain
Structure domains:
4Fe-4S ferredoxin-type domain-containing protein Chains: B, E
Molecule details ›
Chains: B, E
Length: 386 amino acids
Theoretical weight: 42.92 KDa
Source organism: Megalodesulfovibrio gigas
UniProt:
  • Canonical: E2QR96 (Residues: 1-386; Coverage: 100%)
Sequence domains:
Structure domains:
Sulfite reductase gama Chains: C, F
Molecule details ›
Chains: C, F
Length: 105 amino acids
Theoretical weight: 11.31 KDa
Source organism: Megalodesulfovibrio gigas
UniProt:
  • Canonical: E2QR98 (Residues: 1-105; Coverage: 100%)
Sequence domains: DsrC like protein
Structure domains:

Ligands and Environments

3 bound ligands:
Ligand SO3 2 x SO3
Ligand SRM 4 x SRM
Ligand SF4 8 x SF4
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSRRC BEAMLINE BL13B1, SPRING-8 BEAMLINE BL26B2
Spacegroup: P21
Unit cell:
a: 114.721Å b: 60.478Å c: 132.915Å
α: 90° β: 94.3° γ: 90°
R-values:
R R work R free
0.193 0.193 0.212

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