Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 62.17 kDa 
• Atom Count: 4140 
• Modelled Residue Count: 540 
• Deposited Residue Count: 566 
• Unique protein chains: 1

1YBV

STRUCTURE OF TRIHYDROXYNAPHTHALENE REDUCTASE IN COMPLEX WITH NADPH AND AN ACTIVE SITE INHIBITOR

• PDB DOI: 10.2210/pdb1YBV/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Pyricularia grisea
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 1996-09-23 Released: 1997-10-15 
• Deposition Author(s): Andersson, A., Schneider, G., Lindqvist, Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.254 
• R-Value Work: 0.223 
• R-Value Observed: 0.223 

Literature

Crystal structure of the ternary complex of 1,3,8-trihydroxynaphthalene reductase from Magnaporthe grisea with NADPH and an active-site inhibitor.

Andersson, A., Jordan, D., Schneider, G., Lindqvist, Y.

(1996) Structure 4: 1161-1170

• PubMed: 8939741 
• DOI: 10.1016/s0969-2126(96)00124-4
• Primary Citation of Related Structures:  
  1YBV


• PubMed Abstract: 
  

The enzyme 1,3,8-trihydroxynaphthalene reductase (THNR) catalyzes an essential reaction in the biosynthesis of melanin, a black pigment crucial for the pathogenesis of the rice blast fungus, Magnaporthe grisea. The enzyme is the biochemical target of several commercially important fungicides which are used to prevent blast disease in rice plants. We have determined the structure of the ternary complex of THNR with bound NADPH and a fungicide, tricyclazole.

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Related Citations: 

• Crystallisation and Preliminary X-Ray Diffraction Study of 1,3,8-Trihydroxynaphthalene Reductase from Magnaporthe Grisea
  Andersson, A., Jordan, D., Schneider, G., Valent, B., Lindqvist, Y.
  (1996) Proteins 24: 525

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Organizational Affiliation: 

Department of Molecular Biology, Swedish University of Agricultural Sciences, Uppsala Biomedical Center, Uppsala, Sweden.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRIHYDROXYNAPHTHALENE REDUCTASE	A, B	283	Pyricularia grisea	Mutation(s): 2  Gene Names: BUF+ EC: 1.3.1.50 (PDB Primary Data), 1.1.1.252 (UniProt)
UniProt
Find proteins for Q12634 (Magnaporthe oryzae (strain 70-15 / ATCC MYA-4617 / FGSC 8958)) Explore Q12634  Go to UniProtKB:  Q12634

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NDP	C [auth A], E [auth B]	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE C21 H30 N7 O17 P3 ACFIXJIJDZMPPO-NNYOXOHSSA-N
BEA	D [auth A], F [auth B]	5-METHYL-1,2,4-TRIAZOLO[3,4-B]BENZOTHIAZOLE C9 H8 N3 S DQJCHOQLCLEDLL-UHFFFAOYSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.254 
• R-Value Work: 0.223 
• R-Value Observed: 0.223 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 142.6	α = 90
b = 142.6	β = 90
c = 72.9	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-09-23 
• Released Date: 1997-10-15 
Deposition Author(s): Andersson, A., Schneider, G., Lindqvist, Y.

Revision History  

• Version 1.0: 1997-10-15
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2021-11-03
  Changes: Database references, Derived calculations, Other