6Y39

HapE-P88L mutant CCAAT-binding complex from Aspergillus nidulans with cycA DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis of HapEP88L-linked antifungal triazole resistance inAspergillus fumigatus.

Hortschansky, P.Misslinger, M.Morl, J.Gsaller, F.Bromley, M.J.Brakhage, A.A.Groll, M.Haas, H.Huber, E.M.

(2020) Life Sci Alliance 3

  • DOI: 10.26508/lsa.202000729
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Azoles are first-line therapeutics for human and plant fungal infections, but their broad use has promoted the development of resistances. Recently, a pan-azole-resistant clinical Aspergillus fumigatus isolate was identified to carry the mut ...

    Azoles are first-line therapeutics for human and plant fungal infections, but their broad use has promoted the development of resistances. Recently, a pan-azole-resistant clinical Aspergillus fumigatus isolate was identified to carry the mutation P88L in subunit HapE of the CCAAT-binding complex (CBC), a conserved eukaryotic transcription factor. Here, we define the mechanistic basis for resistance in this isolate by showing that the HapE P88L mutation interferes with the CBC's ability to bend and sense CCAAT motifs. This failure leads to transcriptional derepression of the cyp51A gene, which encodes the target of azoles, the 14-α sterol demethylase Cyp51A, and ultimately causes drug resistance. In addition, we demonstrate that the CBC-associated transcriptional regulator HapX assists cyp51A repression in low-iron environments and that this iron-dependent effect is lost in the HapE P88L mutant. Altogether, these results indicate that the mutation HapE P88L confers increased resistance to azoles compared with wt A. fumigatus , particularly in low-iron clinical niches such as the lung.


    Organizational Affiliation

    Center for Integrated Protein Science Munich at the Department Chemistry, Technical University of Munich, Garching, Germany eva.huber@tum.de.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Transcription factor HapC (Eurofung)
B, E, H
92Aspergillus nidulans FGSC A4Mutation(s): 0 
Gene Names: ANIA_04034
Find proteins for Q5B5Z6 (Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139))
Go to UniProtKB:  Q5B5Z6
Protein Feature View
  • Reference Sequence

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HapB
A, D, G
64Aspergillus nidulans FGSC A4Mutation(s): 0 
Gene Names: ANIA_07545
Find proteins for G5EAZ0 (Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139))
Go to UniProtKB:  G5EAZ0
Protein Feature View
  • Reference Sequence

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
CBFD_NFYB_HMF domain-containing protein
C, F, I
119Aspergillus nidulans FGSC A4Mutation(s): 1 
Gene Names: AN6492.2
Find proteins for Q5AYY8 (Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139))
Go to UniProtKB:  Q5AYY8
Protein Feature View
  • Reference Sequence

Find similar nucleic acids by: Sequence  |  Structure

Entity ID: 4
MoleculeChainsLengthOrganism
DNA (25 mer)J25Aspergillus nidulans FGSC A4

Find similar nucleic acids by: Sequence  |  Structure

Entity ID: 5
MoleculeChainsLengthOrganism
DNA (25 mer)K25Aspergillus nidulans FGSC A4
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download CCD File 
F, H
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.15α = 90
b = 103.5β = 90
c = 159.71γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
REFMACphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2020-02-17 
  • Released Date: 2020-05-27 
  • Deposition Author(s): Groll, M., Huber, E.M.

Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanyGR 1861/8-1
German Research Foundation (DFG)GermanySFB1309-325871075

Revision History 

  • Version 1.0: 2020-05-27
    Type: Initial release
  • Version 1.1: 2020-06-10
    Changes: Database references