Biological Assembly 1  

 3D View: Structure | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 104.93 kDa 
• Atom Count: 8189 
• Modelled Residue Count: 921 
• Deposited Residue Count: 932 
• Unique protein chains: 1

1SOX

SULFITE OXIDASE FROM CHICKEN LIVER

• DOI: 10.2210/pdb1SOX/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Gallus gallus
• Mutation(s): No 


• Deposited: 1997-12-31 Released: 1998-04-29 
• Deposition Author(s): Kisker, C., Schindelin, H., Rees, D.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.220 
• R-Value Work: 0.175 
• R-Value Observed: 0.175 

Literature

Molecular basis of sulfite oxidase deficiency from the structure of sulfite oxidase.

Kisker, C., Schindelin, H., Pacheco, A., Wehbi, W.A., Garrett, R.M., Rajagopalan, K.V., Enemark, J.H., Rees, D.C.

(1997) Cell 91: 973-983

• PubMed: 9428520 
• DOI: 10.1016/s0092-8674(00)80488-2
• Primary Citation of Related Structures:  
  1SOX


• PubMed Abstract: 
  

The molybdenum-containing enzyme sulfite oxidase catalyzes the conversion of sulfite to sulfate, the terminal step in the oxidative degradation of cysteine and methionine. Deficiency of this enzyme in humans usually leads to major neurological abnormalities and early death. The crystal structure of chicken liver sulfite oxidase at 1.9 A resolution reveals that each monomer of the dimeric enzyme consists of three domains. At the active site, the Mo is penta-coordinated by three sulfur ligands, one oxo group, and one water/hydroxo. A sulfate molecule adjacent to the Mo identifies the substrate binding pocket. Four variants associated with sulfite oxidase deficiency have been identified: two mutations are near the sulfate binding site, while the other mutations occur within the domain mediating dimerization.

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Organizational Affiliation: 

Howard Hughes Medical Institute and Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SULFITE OXIDASE	A, B	466	Gallus gallus	Mutation(s): 0  Gene Names: SUOX EC: 1.8.3.1
Find proteins for P07850 (Gallus gallus) Explore P07850  Go to UniProtKB:  P07850

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	G [auth A], M [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
MTE	E [auth A], K [auth B]	PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER C10 H14 N5 O6 P S2 HPEUEJRPDGMIMY-IFQPEPLCSA-N
EPE	N [auth B]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
SO4	C [auth A], D [auth A], I [auth B], J [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
MO	F [auth A], L [auth B]	MOLYBDENUM ATOM Mo ZOKXTWBITQBERF-UHFFFAOYSA-N
GOL	H [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.220 
• R-Value Work: 0.175 
• R-Value Observed: 0.175 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.117	α = 90
b = 197.69	β = 94.23
c = 56.009	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-12-31 
• Released Date: 1998-04-29 
Deposition Author(s): Kisker, C., Schindelin, H., Rees, D.C.

Revision History  

• Version 1.0: 1998-04-29
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance