3BR1 | pdb_00003br1

Crystal Structure of the Complex of Dequalinium Bound to QacR(E90Q), a Mutant of a Multidrug Binding Transcriptional Repressor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.31 Å
  • R-Value Free: 
    0.277 (Depositor), 0.272 (DCC) 
  • R-Value Work: 
    0.219 (Depositor), 0.219 (DCC) 
  • R-Value Observed: 
    0.222 (Depositor) 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history

Literature

Formal electrostatic interactions do not govern QacR-cation affinity

Brooks, B.E.Hardie, K.M.Brown, M.H.Skurray, R.A.Brennan, R.G.

To be published.

Macromolecule Content 

  • Total Structure Weight: 94.5 kDa 
  • Atom Count: 5,936 
  • Modeled Residue Count: 732 
  • Deposited Residue Count: 776 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
HTH-type transcriptional regulator qacRA [auth B],
B [auth D],
C [auth A],
D [auth E]
194Staphylococcus aureusMutation(s): 3 
Gene Names: qacR
UniProt
Find proteins for P0A0N3 (Staphylococcus aureus (strain Mu50 / ATCC 700699))
Explore P0A0N3 
Go to UniProtKB:  P0A0N3
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A0N3
Sequence Annotations
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Reference Sequence

Small Molecules

Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
DEQ

Query on DEQ



Download:Ideal Coordinates CCD File
M [auth A]DEQUALINIUM
C30 H40 N4
PCSWXVJAIHCTMO-UHFFFAOYSA-P
SO4

Query on SO4



Download:Ideal Coordinates CCD File
AA [auth E]
E [auth B]
F [auth B]
G [auth D]
H [auth D]
AA [auth E],
E [auth B],
F [auth B],
G [auth D],
H [auth D],
I [auth D],
J [auth D],
K [auth D],
L [auth D],
N [auth A],
O [auth A],
P [auth A],
Q [auth A],
R [auth A],
S [auth A],
T [auth A],
U [auth A],
V [auth E],
W [auth E],
X [auth E],
Y [auth E],
Z [auth E]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.31 Å
  • R-Value Free:  0.277 (Depositor), 0.272 (DCC) 
  • R-Value Work:  0.219 (Depositor), 0.219 (DCC) 
  • R-Value Observed: 0.222 (Depositor) 
Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 170.226α = 90
b = 170.226β = 90
c = 93.577γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
BOSdata collection
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

  • Released Date: 2008-12-23 
  • Deposition Author(s): Brooks, B.E.

Revision History  (Full details and data files)

  • Version 1.0: 2008-12-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2021-10-20
    Changes: Database references, Derived calculations
  • Version 1.3: 2023-08-30
    Changes: Data collection, Refinement description