1QLW

The Atomic Resolution Structure of a Novel Bacterial Esterase

• PDB DOI: https://doi.org/10.2210/pdb1QLW/pdb

• Classification: HYDROLASE(CARBOXYLIC ESTERASE)
• Organism(s): Alcaligenes sp.
• Expression System: Agrobacterium sp.
• Mutation(s): No 


• Deposited: 1999-09-17 Released: 2000-02-10 
• Deposition Author(s): Bourne, P.C., Isupov, M.N., Littlechild, J.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.09 Å
• R-Value Free: 0.158 
• R-Value Work: 0.143 

Literature

The Atomic Resolution Structure of a Novel Bacterial Esterase

Bourne, P.C., Isupov, M.N., Littlechild, J.A.

(2000) Structure 8: 143

• PubMed: 10673440 
• DOI: https://doi.org/10.1016/s0969-2126(00)00090-3
• Primary Citation of Related Structures:  
  1QLW, 2WKW


• PubMed Abstract: 
  

  A novel bacterial esterase that cleaves esters on halogenated cyclic compounds has been isolated from an Alcaligenes species. This esterase 713 is encoded by a 1062 base pair gene. The presence of a leader sequence of 27 amino acids suggests that this enzyme is exported from the cytosol. Esterase 713 has been over-expressed in Agrobacterium without this leader sequence. Its amino acid sequence shows no significant homology to any known protein sequence.

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Organizational Affiliation: 

Schools of Chemistry and Biological Sciences, University of Exeter, Exeter, EX4 4QD, UK.

Biological Assembly 1  

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

Biological assembly 1 generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 71.66 kDa 
• Atom Count: 5,599 
• Modelled Residue Count: 635 
• Deposited Residue Count: 656 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ESTERASE	A, B	328	Alcaligenes sp.	Mutation(s): 0
UniProt
Find proteins for Q7SIA5 (Alcaligenes sp) Explore Q7SIA5  Go to UniProtKB:  Q7SIA5

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth A], D [auth A], E [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.09 Å
• R-Value Free: 0.158 
• R-Value Work: 0.143 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 134.73	α = 90
b = 55.6	β = 125.06
c = 110.2	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHELX	phasing
MLPHARE	phasing
DM	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-02-10 
Deposition Author(s): Bourne, P.C., Isupov, M.N., Littlechild, J.A.

Revision History  

• Version 1.0: 2000-02-10
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-07-24
  Changes: Data collection