Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction | Predict Membrane 

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: 73.94 kDa 
• Atom Count: 5819 
• Modelled Residue Count: 628 
• Deposited Residue Count: 658 
• Unique protein chains: 1

2CFU

Crystal structure of SdsA1, an alkylsulfatase from Pseudomonas aeruginosa, in complex with 1-decane-sulfonic-acid.

• PDB DOI: 10.2210/pdb2CFU/pdb

• Classification: HYDROLASE
• Organism(s): Pseudomonas aeruginosa PAO1
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2006-02-23 Released: 2006-04-26 
• Deposition Author(s): Hagelueken, G., Adams, T.M., Wiehlmann, L., Widow, U., Kolmar, H., Tuemmler, B., Heinz, D.W., Schubert, W.-D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.217 
• R-Value Work: 0.171 
• R-Value Observed: 0.174 

Literature

The Crystal Structure of Sdsa1, an Alkylsulfatase from Pseudomonas Aeruginosa, Defines a Third Class of Sulfatases.

Hagelueken, G., Adams, T.M., Wiehlmann, L., Widow, U., Kolmar, H., Tummler, B., Heinz, D.W., Schubert, W.-D.

(2006) Proc Natl Acad Sci U S A 103: 7631

• PubMed: 16684886 
• DOI: 10.1073/pnas.0510501103
• Primary Citation of Related Structures:  
  2CFU, 2CFZ, 2CG2, 2CG3


• PubMed Abstract: 
  

Pseudomonas aeruginosa is both a ubiquitous environmental bacterium and an opportunistic human pathogen. A remarkable metabolic versatility allows it to occupy a multitude of ecological niches, including wastewater treatment plants and such hostile environments as the human respiratory tract. P. aeruginosa is able to degrade and metabolize biocidic SDS, the detergent of most commercial personal hygiene products. We identify SdsA1 of P. aeruginosa as a secreted SDS hydrolase that allows the bacterium to use primary sulfates such as SDS as a sole carbon or sulfur source. Homologues of SdsA1 are found in many pathogenic and some nonpathogenic bacteria. The crystal structure of SdsA1 reveals three distinct domains. The N-terminal catalytic domain with a binuclear Zn2+ cluster is a distinct member of the metallo-beta-lactamase fold family, the central dimerization domain ensures resistance to high concentrations of SDS, whereas the C-terminal domain provides a hydrophobic groove, presumably to recruit long aliphatic substrates. Crystal structures of apo-SdsA1 and complexes with substrate analog and products indicate an enzymatic mechanism involving a water molecule indirectly activated by the Zn2+ cluster. The enzyme SdsA1 thus represents a previously undescribed class of sulfatases that allows P. aeruginosa to survive and thrive under otherwise bacteriocidal conditions.

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Organizational Affiliation: 

Division of Structural Biology, German Research Centre for Biotechnology, Mascheroder Weg 1, D-38124 Braunschweig, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SDSA1	A	658	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: sdsA1, PA0740 Membrane Entity: Yes
UniProt
Find proteins for Q9I5I9 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9I5I9  Go to UniProtKB:  Q9I5I9

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1DB	B [auth A]	1-DECANE-SULFONIC-ACID C10 H22 O3 S KVGOXGQSTGQXDD-UHFFFAOYSA-N
PEG	C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
ZN	L [auth A], M [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
IPA	K [auth A]	ISOPROPYL ALCOHOL C3 H8 O KFZMGEQAYNKOFK-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.217 
• R-Value Work: 0.171 
• R-Value Observed: 0.174 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 86.057	α = 90
b = 86.057	β = 90
c = 364.413	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-02-23 
• Released Date: 2006-04-26 
Deposition Author(s): Hagelueken, G., Adams, T.M., Wiehlmann, L., Widow, U., Kolmar, H., Tuemmler, B., Heinz, D.W., Schubert, W.-D.

Revision History  

• Version 1.0: 2006-04-26
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2011-09-28
  Changes: Atomic model, Database references, Derived calculations, Non-polymer description