5FHI

Crystallographic structure of PsoE without Co

• PDB DOI: https://doi.org/10.2210/pdb5FHI/pdb

• Classification: TRANSFERASE
• Organism(s): Aspergillus fumigatus Af293
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-12-22 Released: 2016-04-20 
• Deposition Author(s): Hara, K., Hashimoto, H., Yamamoto, T., Tsunematsu, Y., Watanabe, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.41 Å
• R-Value Free: 
  0.246 (Depositor), 0.220 (DCC) 
• R-Value Work: 
  0.185 (Depositor), 0.200 (DCC) 
• R-Value Observed: 
  0.191 (Depositor) 

Literature

Oxidative trans to cis Isomerization of Olefins in Polyketide Biosynthesis.

Yamamoto, T., Tsunematsu, Y., Hara, K., Suzuki, T., Kishimoto, S., Kawagishi, H., Noguchi, H., Hashimoto, H., Tang, Y., Hotta, K., Watanabe, K.

(2016) Angew Chem Int Ed Engl 55: 6207-6210

• PubMed: 27072782 
• DOI: https://doi.org/10.1002/anie.201600940
• Primary Citation of Related Structures:  
  5F8B, 5FHI


• PubMed Abstract: 
  

  Geometric isomerization can expand the scope of biological activities of natural products. The observed chemical diversity among the pseurotin-type fungal secondary metabolites is in part generated by a trans to cis isomerization of an olefin. In vitro characterizations of pseurotin biosynthetic enzymes revealed that the glutathione S-transferase PsoE requires participation of the bifunctional C-methyltransferase/epoxidase PsoF to complete the trans to cis isomerization of the pathway intermediate presynerazol. The crystal structure of the PsoE/glutathione/presynerazol complex indicated stereospecific glutathione-presynerazol conjugate formation is the principal function of PsoE. Moreover, PsoF was identified to have an additional, unexpected oxidative isomerase activity, thus making it a trifunctional enzyme which is key to the complexity generation in pseurotin biosynthesis. Through the study, we identified a novel mechanism of accomplishing a seemingly simple trans to cis isomerization reaction.

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Organizational Affiliation: 

Department of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, 422-8526, Japan.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 28.02 kDa 
• Atom Count: 1,774 
• Modelled Residue Count: 215 
• Deposited Residue Count: 244 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glutathione S-transferase, putative	A	244	Aspergillus fumigatus Af293	Mutation(s): 0  Gene Names: AFUA_8G00580 EC: 2.5.1
UniProt
Find proteins for Q4WB03 (Aspergillus fumigatus (strain ATCC MYA-4609 / CBS 101355 / FGSC A1100 / Af293)) Explore Q4WB03  Go to UniProtKB:  Q4WB03

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GSH	B [auth A]	GLUTATHIONE C10 H17 N3 O6 S RWSXRVCMGQZWBV-WDSKDSINSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.41 Å
• R-Value Free:  0.246 (Depositor), 0.220 (DCC) 
• R-Value Work:  0.185 (Depositor), 0.200 (DCC) 
• R-Value Observed: 0.191 (Depositor) 

Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 145.413	α = 90
b = 145.413	β = 90
c = 51.266	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
AutoSol	phasing
PHASER	phasing
Coot	model building
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-04-20 
Deposition Author(s): Hara, K., Hashimoto, H., Yamamoto, T., Tsunematsu, Y., Watanabe, K.

Revision History  

• Version 1.0: 2016-04-20
  Type: Initial release
  
• Version 1.1: 2017-07-05
  Changes: Database references
• Version 1.2: 2024-03-20
  Changes: Data collection, Database references