4FN8 | pdb_00004fn8

Crystal structure of the Mtb enoyl CoA isomerase (Rv0632c)in complex with acetoacetyl CoA

• PDB DOI: https://doi.org/10.2210/pdb4FN8/pdb

• Classification: ISOMERASE
• Organism(s): Mycobacterium tuberculosis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2012-06-19 Released: 2013-05-29 
• Deposition Author(s): Bruning, J.B., Gao, N., Hernandez, E.D., Li, H., Dang, N., Hung, L.W., Sacchettini, J.C., TB Structural Genomics Consortium (TBSGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.83 Å
• R-Value Free: 
  0.189 (Depositor), 0.187 (DCC) 
• R-Value Work: 
  0.149 (Depositor), 0.148 (DCC) 
• R-Value Observed: 
  0.151 (Depositor) 

Starting Model: experimental

Literature

Crystal structure and mechanism of the prokaryotic enoyl CoA isomerase (ECI)

Bruning, J.B., Gao, N., Hernandez, E.D., Li, H., Dang, N., Hung, L.W., Moran, S., Sacchettini, J.C.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Biological Assembly 2  

Global Symmetry: Dihedral - D3  (Explore in 3D)
Global Stoichiometry: Homo 6-mer - A6 

Biological assembly 2 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 25.61 kDa 
• Atom Count: 2,144 
• Modeled Residue Count: 230 
• Deposited Residue Count: 232 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Enoyl-CoA hydratase/isomerase family protein	A	232	Mycobacterium tuberculosis	Mutation(s): 0  Gene Names: echA3, MT0660, Rv0632c EC: 4.2.1.17
UniProt
Find proteins for I6Y8B5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore I6Y8B5  Go to UniProtKB:  I6Y8B5

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CAA	B [auth A]	ACETOACETYL-COENZYME A C25 H40 N7 O18 P3 S OJFDKHTZOUZBOS-CITAKDKDSA-N
SO4	C [auth A], D [auth A], E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.83 Å
• R-Value Free:  0.189 (Depositor), 0.187 (DCC) 
• R-Value Work:  0.149 (Depositor), 0.148 (DCC) 
• R-Value Observed: 0.151 (Depositor) 

Space Group: P 6₃ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 75.496	α = 90
b = 75.496	β = 90
c = 136.852	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-05-29 
Deposition Author(s): Bruning, J.B., Gao, N., Hernandez, E.D., Li, H., Dang, N., Hung, L.W., Sacchettini, J.C., TB Structural Genomics Consortium (TBSGC)

Revision History  

• Version 1.0: 2013-05-29
  Type: Initial release
  
• Version 1.1: 2017-11-15
  Changes: Refinement description
• Version 1.2: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description