7D78

The structure of thioesterase DcsB


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.97 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.148 

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Ligand Structure Quality Assessment 


This is version 1.0 of the entry. See complete history


Literature

A Polyketide Cyclase That Forms Medium-Ring Lactones.

Gao, D.W.Jamieson, C.S.Wang, G.Yan, Y.Zhou, J.Houk, K.N.Tang, Y.

(2021) J Am Chem Soc 143: 80-84

  • DOI: 10.1021/jacs.0c11226
  • Primary Citation of Related Structures:  
    7D78, 7D79

  • PubMed Abstract: 
  • Medium-ring lactones are synthetically challenging due to unfavorable energetics involved in cyclization. We have discovered a thioesterase enzyme DcsB, from the decarestrictine C1 ( 1 ) biosynthetic pathway, that efficiently performs medium-ring lactonizations ...

    Medium-ring lactones are synthetically challenging due to unfavorable energetics involved in cyclization. We have discovered a thioesterase enzyme DcsB, from the decarestrictine C1 ( 1 ) biosynthetic pathway, that efficiently performs medium-ring lactonizations. DcsB shows broad substrate promiscuity toward linear substrates that vary in lengths and substituents, and is a potential biocatalyst for lactonization. X-ray crystal structure and computational analyses provide insights into the molecular basis of catalysis.


    Organizational Affiliation

    State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, China.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DltD domain-containing proteinB [auth A],
A [auth D]
322Beauveria bassiana ARSEF 2860Mutation(s): 0 
Gene Names: BBA_03809
UniProt
Find proteins for J4WAT9 (Beauveria bassiana (strain ARSEF 2860))
Explore J4WAT9 
Go to UniProtKB:  J4WAT9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupJ4WAT9
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.97 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.148 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 178.707α = 90
b = 47.569β = 93.187
c = 71.695γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
HKL-3000phasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-27
    Type: Initial release