3FAK

Structural and Functional Analysis of a Hormone-Sensitive Lipase like EstE5 from a Metagenome Library

• PDB DOI: https://doi.org/10.2210/pdb3FAK/pdb

• Classification: HYDROLASE
• Organism(s): uncultured bacterium
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2008-11-17 Released: 2009-02-10 
• Deposition Author(s): Hwang, K.Y., Nam, K.H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.243 
• R-Value Work: 0.214 
• R-Value Observed: 0.214 

Starting Model: experimental

Literature

Structural and functional analysis of a novel EstE5 belonging to the subfamily of hormone-sensitive lipase

Nam, K.H., Kim, M.-Y., Kim, S.-J., Priyadarshi, A., Lee, W.H., Hwang, K.Y.

(2009) Biochem Biophys Res Commun 379: 553-556

• PubMed: 19116143 
• DOI: https://doi.org/10.1016/j.bbrc.2008.12.085
• Primary Citation of Related Structures:  
  3FAK


• PubMed Abstract: 
  

  Hormone-sensitive lipase (HSL) plays an important role in the regulation of rodent fat cell lipolysis. It is regarded as an adipose tissue-specific enzyme whose sole metabolic role is the catalysis of hormone-stimulated lipolysis in mammalian cells. In this report we describe the functional and structural analysis of an EstE5 protein from a soil metagenome library. Function analysis results indicated that EstE5 preferentially hydrolyzes short-chain ester compounds, and our kinetic studies revealed the optimal pH and temperature. Based on the structural analysis, we defined the active site and the binding pocket. Structurally, EstE5 belongs to the HSL family and these structural studies may have applications in the production of value-added products, including pharmaceuticals.

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Organizational Affiliation: 

Division of Biotechnology, College of Life Sciences & Biotechnology, Korea University, Seoul 136-701, Republic of Korea.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 34.71 kDa 
• Atom Count: 2,438 
• Modelled Residue Count: 297 
• Deposited Residue Count: 322 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Esterase/lipase	A	322	uncultured bacterium	Mutation(s): 0  EC: 3.1.1
UniProt
Find proteins for Q0GMU2 (uncultured bacterium) Explore Q0GMU2  Go to UniProtKB:  Q0GMU2

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA	C [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.243 
• R-Value Work: 0.214 
• R-Value Observed: 0.214 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.996	α = 90
b = 60.996	β = 90
c = 149.282	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-02-10 
Deposition Author(s): Hwang, K.Y., Nam, K.H.

Revision History  

• Version 1.0: 2009-02-10
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description