6C85

Crystal structure of aspartate semialdehyde dehydrogenase from Blastomyces dermatitidis with p-benzoquinone


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

Structural insights into inhibitor binding to a fungal ortholog of aspartate semialdehyde dehydrogenase.

Dahal, G.P.Viola, R.E.

(2018) Biochem Biophys Res Commun 503: 2848-2854

  • DOI: https://doi.org/10.1016/j.bbrc.2018.08.053
  • Primary Citation of Related Structures:  
    6C85, 6C8W

  • PubMed Abstract: 

    The aspartate pathway, uniquely found in plants and microorganisms, offers novel potential targets for the development of new antimicrobial drugs. Aspartate semialdehyde dehydrogenase (ASADH) catalyzes production of a key intermediate at the first branch point in this pathway. Several fungal ASADH structures have been determined, but the prior crystallization conditions had precluded complex formation with enzyme inhibitors. The first inhibitor-bound and cofactor-bound structures of ASADH from the pathogenic fungi Blastomyces dermatitidis have now been determined, along with a structural and functional comparison to other ASADH family members. The structure of this new ASADH is similar to the other fungal orthologs, but with some critical differences in the orientation of some active site functional groups and in the subunit interface region. The presence of this bound inhibitor reveals the first details about inhibitor binding interactions, and the flexible orientation of its aromatic ring provides helpful insights into the design of potentially more potent and selective antifungal compounds.


  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH, 43606, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Aspartate-semialdehyde dehydrogenase
A, B
375Blastomyces gilchristii SLH14081Mutation(s): 1 
Gene Names: BDCG_01946
UniProt
Find proteins for A0A179UL48 (Blastomyces gilchristii (strain SLH14081))
Explore A0A179UL48 
Go to UniProtKB:  A0A179UL48
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A179UL48
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 107.351α = 90
b = 107.351β = 90
c = 223.096γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI077720

Revision History  (Full details and data files)

  • Version 1.0: 2019-01-30
    Type: Initial release
  • Version 1.1: 2019-02-20
    Changes: Author supporting evidence, Data collection
  • Version 1.2: 2019-09-25
    Changes: Data collection, Database references
  • Version 1.3: 2019-12-11
    Changes: Author supporting evidence
  • Version 1.4: 2023-10-04
    Changes: Data collection, Database references, Refinement description