Crystal structure of a mycobacterial protein

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.190 

Starting Model: experimental
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Crystal structure of FadD32, an enzyme essential for mycolic acid biosynthesis in mycobacteria.

Li, W.Gu, S.Fleming, J.Bi, L.

(2015) Sci Rep 5: 15493-15493

  • DOI: https://doi.org/10.1038/srep15493
  • Primary Citation of Related Structures:  
    5D6J, 5D6N

  • PubMed Abstract: 

    Fatty acid degradation protein D32 (FadD32), an enzyme required for mycolic acid biosynthesis and essential for mycobacterial growth, has recently been identified as a valid and promising target for anti-tuberculosis drug development. Here we report the crystal structures of Mycobacterium smegmatis FadD32 in the apo and ATP-bound states at 2.4 Å and 2.25 Å resolution, respectively. FadD32 consists of two globular domains connected by a flexible linker. ATP binds in a cleft at the interface between the N- and C-terminal domains and its binding induces significant local conformational changes in FadD32. The binding sites of meromycolic acid and phosphopantetheine are identified by structural comparison with other members of the adenylating enzyme superfamily. These results will improve our understanding of the catalytic mechanism of FadD32 and help in the design of inhibitors of this essential enzyme.

  • Organizational Affiliation

    Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Acyl-CoA synthase508Mycolicibacterium smegmatis MC2 155Mutation(s): 0 
Gene Names: fadD32MSMEG_6393MSMEI_6225
Find proteins for A0R618 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155))
Explore A0R618 
Go to UniProtKB:  A0R618
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0R618
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.68α = 90
b = 78.174β = 90
c = 102.157γ = 90
Software Package:
Software NamePurpose
Cootmodel building
HKL-2000data scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-02
    Type: Initial release
  • Version 1.1: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description