5H6G

Crystal structure of a thermostable lipase from Marine Streptomyces


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of a lipase from Streptomyces sp. strain W007 - implications for thermostability and regiospecificity

Zhao, Z.Hou, S.Lan, D.Wang, X.Liu, J.Khan, F.I.Wang, Y.

(2017) FEBS J 284: 3506-3519

  • DOI: 10.1111/febs.14211
  • Primary Citation of Related Structures:  
    5H6B, 5H6G

  • PubMed Abstract: 
  • MAS1 from marine Streptomyces sp. strain W007 belongs to the bacterial lipase I.7 subfamily and is characterized as a thermostable and nonregiospecific lipase. To shed light on the catalytic mechanism of MAS1, we determined its crystal structure with closed conformation in two crystal forms at 2 ...

    MAS1 from marine Streptomyces sp. strain W007 belongs to the bacterial lipase I.7 subfamily and is characterized as a thermostable and nonregiospecific lipase. To shed light on the catalytic mechanism of MAS1, we determined its crystal structure with closed conformation in two crystal forms at 2.3 Å resolution. MAS1 adopts the canonical α/β hydrolase core fold with its catalytic triad being formed by S109, D200 and H232. Structural analysis and biochemical assays revealed that disulfide bonds and salt bridges play a vital role in the thermostability of MAS1. In addition, we discovered that the replacement of H108 with a tryptophan converts MAS1 from a nonregiospecific to an sn-1,3-specific lipase, suggesting the functional importance of the second position from the conserved pentapeptide motif in defining the regiospecificity of MAS1. Our present study provides insights into the molecular basis for the thermostability and regiospecificity of MAS1, and it may aid in the rational design of thermostable or regiospecific lipases for potential industrial applications.


    Organizational Affiliation

    School of Food Sciences and Engineering, South China University of Technology, Guangzhou, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Putative secreted lipaseA, B, C271Streptomyces sp. W007Mutation(s): 0 
Gene Names: SPW_1544
UniProt
Find proteins for H0B8D4 (Streptomyces sp. W007)
Explore H0B8D4 
Go to UniProtKB:  H0B8D4
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 129.5α = 90
b = 129.5β = 90
c = 137.83γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-09-20
    Type: Initial release
  • Version 1.1: 2017-10-18
    Changes: Database references
  • Version 1.2: 2017-11-01
    Changes: Database references