4QNW

Crystal structure of EasA, an old yellow enzyme from Aspergillus fumigatus

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history. 


Literature

Structure of an Aspergillus fumigatus old yellow enzyme (EasA) involved in ergot alkaloid biosynthesis.

Chilton, A.S., Ellis, A.L., Lamb, A.L.

(2014) Acta Crystallogr Sect F Struct Biol Cryst Commun 70: 1328-1332

  • DOI: 10.1107/S2053230X14018962
  • Primary Citation of Related Structures:  
    4QNW

  • PubMed Abstract: 

    • The Aspergillus fumigatus old yellow enzyme (OYE) EasA reduces chanoclavine-I aldehyde to dihydrochanoclavine aldehyde and works in conjunction with festuclavine synthase at the branchpoint for ergot alkaloid pathways. The crystal structure of the FMN-loaded EasA was determined to 1 ...

    The Aspergillus fumigatus old yellow enzyme (OYE) EasA reduces chanoclavine-I aldehyde to dihydrochanoclavine aldehyde and works in conjunction with festuclavine synthase at the branchpoint for ergot alkaloid pathways. The crystal structure of the FMN-loaded EasA was determined to 1.8 Å resolution. The active-site amino acids of OYE are conserved, supporting a similar mechanism for reduction of the α/β-unsaturated aldehyde. The C-terminal tail of one monomer packs into the active site of a monomer in the next asymmetric unit, which is most likely to be a crystallization artifact and not a mechanism of self-regulation.

    Organizational Affiliation: 

    Molecular Biosciences, University of Kansas, 1200 Sunnyside Avenue, Lawrence, KS 66045, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chanoclavine-I aldehyde reductaseA392Aspergillus fumigatus Af293Mutation(s): 0 
Gene Names: AFUA_2G17960, easA, fgaOx3
EC: 1.3.1.100
Find proteins for Q4WZ70 (Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100))
Explore Q4WZ70 
Go to UniProtKB:  Q4WZ70
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN
Download Ideal Coordinates CCD File 
 B [auth A]FLAVIN MONONUCLEOTIDE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N		 Ligand Interaction
SO4
Query on SO4
Download Ideal Coordinates CCD File 
 C [auth A], D [auth A], E [auth A], F [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
 G [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.182 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.456α = 90
b = 65.913β = 90
c = 115.219γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
REFMACrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2014-06-18 
  • Released Date: 2014-10-22 
    • Deposition Author(s): Lamb, A.L.

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-22
    Type: Initial release