4G2D

Crystal structure of the hyperthermophilic Sulfolobus islandicus PLL SisLac

• PDB DOI: https://doi.org/10.2210/pdb4G2D/pdb

• Classification: HYDROLASE
• Organism(s): Sulfolobus islandicus M.16.4
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-07-11 Released: 2012-10-24 
• Deposition Author(s): Gotthard, G., Hiblot, J., Elias, M., Chabriere, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.292 
• R-Value Work: 0.265 
• R-Value Observed: 0.266 

Literature

Structural and enzymatic characterization of the lactonase SisLac from Sulfolobus islandicus

Hiblot, J., Gotthard, G., Chabriere, E., Elias, M.

(2012) PLoS One 7: e47028-e47028

• PubMed: 23071703 
• DOI: https://doi.org/10.1371/journal.pone.0047028
• Primary Citation of Related Structures:  
  4G2D


• PubMed Abstract: 
  

  A new member of the Phosphotriesterase-Like Lactonases (PLL) family from the hyperthermophilic archeon Sulfolobus islandicus (SisLac) has been characterized. SisLac is a native lactonase that exhibits a high promiscuous phosphotriesterase activity. SisLac thus represents a promising target for engineering studies, exhibiting both detoxification and bacterial quorum quenching abilities, including human pathogens such as Pseudomonas aeruginosa.

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Organizational Affiliation: 

URMITE UMR CNRS-IRD 6236, IFR48, Faculté de Médecine et de Pharmacie, Université de la Méditerranée, Marseille, France.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 35.87 kDa 
• Atom Count: 2,517 
• Modelled Residue Count: 314 
• Deposited Residue Count: 315 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aryldialkylphosphatase	A	315	Sulfolobus islandicus M.16.4	Mutation(s): 0  Gene Names: M164_0332, sislac EC: 3.1.8.1
UniProt
Find proteins for C4KKZ9 (Sulfolobus islandicus (strain M.16.4 / Kamchatka #3)) Explore C4KKZ9  Go to UniProtKB:  C4KKZ9

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CO	B [auth A]	COBALT (II) ION Co XLJKHNWPARRRJB-UHFFFAOYSA-N
FE2	C [auth A]	FE (II) ION Fe CWYNVVGOOAEACU-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
KCX	A	L-PEPTIDE LINKING	C7 H14 N2 O4		LYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.292 
• R-Value Work: 0.265 
• R-Value Observed: 0.266 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 47.81	α = 90
b = 47.81	β = 90
c = 239.1	γ = 120

Software Package:

Software Name	Purpose
XDS	data scaling
PHASER	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-10-24 
Deposition Author(s): Gotthard, G., Hiblot, J., Elias, M., Chabriere, E.

Revision History  

• Version 1.0: 2012-10-24
  Type: Initial release
  
• Version 1.1: 2013-05-22
  Changes: Database references
• Version 1.2: 2023-11-08
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.3: 2023-12-06
  Changes: Data collection