2CFU

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

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 

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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

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

  • 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 ...

    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.

    Organizational Affiliation: 

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



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SDSA1A658Pseudomonas aeruginosa PAO1Mutation(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
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1DB (Subject of Investigation/LOI)
Query on 1DB
Download Ideal Coordinates CCD File 
 B [auth A]1-DECANE-SULFONIC-ACID
C10 H22 O3 S
KVGOXGQSTGQXDD-UHFFFAOYSA-N		 Ligand Interaction
PEG
Query on PEG
Download Ideal Coordinates CCD File 
 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		 Ligand Interaction
ZN
Query on ZN
Download Ideal Coordinates CCD File 
 L [auth A], M [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
IPA
Query on IPA
Download Ideal Coordinates CCD File 
 K [auth A]ISOPROPYL ALCOHOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N		 Ligand Interaction
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 = 86.057α = 90
b = 86.057β = 90
c = 364.413γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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