5AQC | pdb_00005aqc

KstR, transcriptional repressor of cholesterol degradation in Mycobacterium tuberculosis, bound to the cholesterol coenzyme A derivative, (25R)-3-oxocholest-4-en-26-oyl-CoA.

• PDB DOI: https://doi.org/10.2210/pdb5AQC/pdb

• Classification: TRANSCRIPTION
• Organism(s): Mycobacterium tuberculosis H37Rv
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2015-09-21 Released: 2016-10-05 
• Deposition Author(s): Podust, L.M., Ouellet, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.66 Å
• R-Value Free: 
  0.226 (Depositor), 0.220 (DCC) 
• R-Value Work: 
  0.184 (Depositor), 0.190 (DCC) 
• R-Value Observed: 
  0.186 (Depositor) 

Starting Model: experimental

Literature

Kstr, Transcriptional Repressor of Cholesterol Degradation in Mycobacterium Tuberculosis, Bound to the Cholesterol Coenzyme a Derivative, (25S)-3- Oxocholest-4-En-26-Oyl-Coa.

Podust, L.M., Ouellet, H.

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)

Macromolecule Content 

• Total Structure Weight: 48.4 kDa 
• Atom Count: 3,111 
• Modeled Residue Count: 364 
• Deposited Residue Count: 410 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HTH-TYPE TRANSCRIPTIONAL REPRESSOR KSTR	A, B	205	Mycobacterium tuberculosis H37Rv	Mutation(s): 0
UniProt
Find proteins for P96856 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P96856  Go to UniProtKB:  P96856

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
5JB	C [auth A], F [auth B]	(25S)-3-oxocholest-4-en-26-oyl-CoA C48 H76 N7 O18 P3 S QHTNQHCVKNUPEI-ZAXAEIALSA-N
MPD	D [auth A], H [auth B]	(4S)-2-METHYL-2,4-PENTANEDIOL C6 H14 O2 SVTBMSDMJJWYQN-YFKPBYRVSA-N
SO4	G [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	E [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.66 Å
• R-Value Free:  0.226 (Depositor), 0.220 (DCC) 
• R-Value Work:  0.184 (Depositor), 0.190 (DCC) 
• R-Value Observed: 0.186 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 127.329	α = 90
b = 67.404	β = 105.71
c = 49.923	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-10-05 
Deposition Author(s): Podust, L.M., Ouellet, H.

Revision History  

• Version 1.0: 2016-10-05
  Type: Initial release
  
• Version 1.1: 2024-01-10
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description