8EP7 | pdb_00008ep7

Crystal Structure of the Ketol-acid Reductoisomerase from Bacillus anthracis in complex with NADP

• PDB DOI: https://doi.org/10.2210/pdb8EP7/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Bacillus anthracis str. 'Ames Ancestor
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2022-10-05 Released: 2022-10-19 
• Deposition Author(s): Kim, Y., Maltseva, N., Osipiuk, J., Gu, M., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID), Center for Structural Biology of Infectious Diseases (CSBID)
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 
  0.262 (Depositor), 0.260 (DCC) 
• R-Value Work: 
  0.217 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.219 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of the Ketol-acid Reductoisomerase from Bacillus anthracis in the complex with NADP.

Kim, Y., Maltseva, N., Osipiuk, J., Gu, M., Joachimiak, A.

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

Biological assembly 3 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 114.82 kDa 
• Atom Count: 7,881 
• Modeled Residue Count: 969 
• Deposited Residue Count: 1,005 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ketol-acid reductoisomerase (NADP(+)) 2	A, B, C	335	Bacillus anthracis str. 'Ames Ancestor	Mutation(s): 0  Gene Names: ilvC2, ilvC-2, BA_1852, GBAA_1852, BAS1716 EC: 1.1.1.86
UniProt
Find proteins for Q81S27 (Bacillus anthracis) Explore Q81S27  Go to UniProtKB:  Q81S27

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAP (Subject of Investigation/LOI)	D [auth A], E [auth B], G [auth C]	NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE C21 H28 N7 O17 P3 XJLXINKUBYWONI-NNYOXOHSSA-N
SO4	H [auth C]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ACY	F [auth B]	ACETIC ACID C2 H4 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B, C	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free:  0.262 (Depositor), 0.260 (DCC) 
• R-Value Work:  0.217 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.219 (Depositor) 

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 126.575	α = 90
b = 131.86	β = 90
c = 132.614	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-10-19 
Deposition Author(s): Kim, Y., Maltseva, N., Osipiuk, J., Gu, M., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID), Center for Structural Biology of Infectious Diseases (CSBID)

---

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	--

Revision History  

• Version 1.0: 2022-10-19
  Type: Initial release
  
• Version 1.1: 2023-02-01
  Changes: Other, Structure summary
• Version 1.2: 2023-10-25
  Changes: Data collection, Refinement description
• Version 1.3: 2023-11-15
  Changes: Data collection
• Version 1.4: 2024-10-16
  Changes: Structure summary