3GR6

Crystal structure of the staphylococcus aureus enoyl-acyl carrier protein reductase (fabI) in complex with NADP and triclosan

• PDB DOI: https://doi.org/10.2210/pdb3GR6/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Staphylococcus aureus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2009-03-25 Released: 2009-10-20 
• Deposition Author(s): Priyadarshi, A., Hwang, K.Y.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.28 Å
• R-Value Free: 0.264 
• R-Value Work: 0.203 
• R-Value Observed: 0.206 

Starting Model: experimental

Literature

Structural insights into Staphylococcus aureus enoyl-ACP reductase (FabI), in complex with NADP and triclosan.

Priyadarshi, A., Kim, E.E., Hwang, K.Y.

(2010) Proteins 78: 480-486

• PubMed: 19768684 
• DOI: https://doi.org/10.1002/prot.22581
• Primary Citation of Related Structures:  
  3GNS, 3GNT, 3GR6

---

Organizational Affiliation: 

Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, South Korea.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 117.54 kDa 
• Atom Count: 8,334 
• Modelled Residue Count: 1,029 
• Deposited Residue Count: 1,040 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Enoyl-[acyl-carrier-protein] reductase [NADH]	A, B [auth D], C [auth G], D [auth J]	260	Staphylococcus aureus	Mutation(s): 0  Gene Names: fabI EC: 1.3.1.9
UniProt
Find proteins for Q6GI75 (Staphylococcus aureus (strain MRSA252)) Explore Q6GI75  Go to UniProtKB:  Q6GI75

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAP	E [auth A], G [auth D], I [auth G], K [auth J]	NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE C21 H28 N7 O17 P3 XJLXINKUBYWONI-NNYOXOHSSA-N
TCL	F [auth A], H [auth D], J [auth G], L [auth J]	TRICLOSAN C12 H7 Cl3 O2 XEFQLINVKFYRCS-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
TCL	BindingDB:  3GR6	Ki: 0.05 (nM) from 1 assay(s)
		IC50: min: 59, max: 1100 (nM) from 4 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.28 Å
• R-Value Free: 0.264 
• R-Value Work: 0.203 
• R-Value Observed: 0.206 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 77.564	α = 90
b = 118.438	β = 90
c = 149.83	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-10-20 
Deposition Author(s): Priyadarshi, A., Hwang, K.Y.

Revision History  

• Version 1.0: 2009-10-20
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2014-02-12
  Changes: Database references
• Version 1.3: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description