4FIZ | pdb_00004fiz

Crystal structure of the binary complex between a fungal 17beta-hydroxysteroid dehydrogenase (Apo form) and coumestrol

• PDB DOI: https://doi.org/10.2210/pdb4FIZ/pdb

• Classification: Oxidoreductase/Oxidoreductase inhibitor
• Organism(s): Curvularia lunata
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-06-11 Released: 2013-07-03 
• Deposition Author(s): Cassetta, A., Lamba, D., Krastanova, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.172 (Depositor), 0.178 (DCC) 
• R-Value Work: 
  0.156 (Depositor), 0.170 (DCC) 
• R-Value Observed: 
  0.156 (Depositor) 

Starting Model: experimental

Literature

Crystallographic studies on the flavonoid inhibition of a fungal 17beta-hydroxysteroid dehydrogenase

Cassetta, A., Lamba, D., Krastanova, I., Kristan, K., Brunskole-Svegelj, M., Stojan, J., Lanisnik-Rizner, T.

To be published.

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)

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 3 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 29.78 kDa 
• Atom Count: 2,213 
• Modeled Residue Count: 260 
• Deposited Residue Count: 270 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
17beta-hydroxysteroid dehydrogenase	A	270	Curvularia lunata	Mutation(s): 0  Gene Names: 17HSDcl EC: 1.1.1.62
UniProt
Find proteins for O93874 (Cochliobolus lunatus) Explore O93874  Go to UniProtKB:  O93874

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CUE	B [auth A]	Coumestrol C15 H8 O5 ZZIALNLLNHEQPJ-UHFFFAOYSA-N
GOL	D [auth A], E [auth A], F [auth A], G [auth A], H [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
DMS	C [auth A]	DIMETHYL SULFOXIDE C2 H6 O S IAZDPXIOMUYVGZ-UHFFFAOYSA-N
CL	I [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.172 (Depositor), 0.178 (DCC) 
• R-Value Work:  0.156 (Depositor), 0.170 (DCC) 
• R-Value Observed: 0.156 (Depositor) 

Space Group: I 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.92	α = 90
b = 67.92	β = 90
c = 267.65	γ = 90

Software Package:

Software Name	Purpose
XRD1	data collection
PHASER	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-07-03 
Deposition Author(s): Cassetta, A., Lamba, D., Krastanova, I.

Revision History  

• Version 1.0: 2013-07-03
  Type: Initial release
  
• Version 1.1: 2014-10-29
  Changes: Structure summary
• Version 1.2: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description