Biological Assembly 1  

 3D View: Structure

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 24.60 kDa 
• Atom Count: 1739 
• Modelled Residue Count: 215 
• Deposited Residue Count: 215 
• Unique protein chains: 1

1SUR

PHOSPHO-ADENYLYL-SULFATE REDUCTASE

• DOI: 10.2210/pdb1SUR/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Escherichia coli
• Mutation(s): No 


• Deposited: 1998-04-01 Released: 1999-05-11 
• Deposition Author(s): Sinning, I., Savage, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.230 
• R-Value Work: 0.190 
• R-Value Observed: 0.190 

Literature

Crystal structure of phosphoadenylyl sulphate (PAPS) reductase: a new family of adenine nucleotide alpha hydrolases.

Savage, H., Montoya, G., Svensson, C., Schwenn, J.D., Sinning, I.

(1997) Structure 5: 895-906

• PubMed: 9261082 
• DOI: 10.1016/s0969-2126(97)00244-x
• Primary Citation of Related Structures:  
  1SUR


• PubMed Abstract: 
  

Assimilatory sulphate reduction supplies prototrophic organisms with reduced sulphur for the biosynthesis of all sulphur-containing metabolites. This process is driven by a sequence of enzymatic steps involving phosphoadenylyl sulphate (PAPS) reductase. Thioredoxin is used as the electron donor for the reduction of PAPS to phospho-adenosine-phosphate (PAP) and sulphite. Unlike most electron-transfer reactions, there are no cofactors or prosthetic groups involved in this reduction and PAPS reductase is one of the rare examples of an enzyme that is able to store two electrons. Determination of the structure of PAPS reductase is the first step towards elucidating the biochemical details of the reduction of PAPS to sulphite.

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Organizational Affiliation: 

European Molecular Biology Laboratory, Structural Biology Programme, Heidelberg, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PAPS REDUCTASE	A	215	Escherichia coli	Mutation(s): 0  Gene Names: cysH EC: 1.8.99.4 (PDB Primary Data), 1.8.4.8 (UniProt)
Find proteins for P17854 (Escherichia coli (strain K12)) Explore P17854  Go to UniProtKB:  P17854

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.230 
• R-Value Work: 0.190 
• R-Value Observed: 0.190 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 82.74	α = 90
b = 95.76	β = 90
c = 109.8	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-04-01 
• Released Date: 1999-05-11 
Deposition Author(s): Sinning, I., Savage, H.

Revision History  

• Version 1.0: 1999-05-11
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance