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- PDB-3br1: Crystal Structure of the Complex of Dequalinium Bound to QacR(E90... -
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Open data
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Basic information
Entry | Database: PDB / ID: 3br1 | ||||||
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Title | Crystal Structure of the Complex of Dequalinium Bound to QacR(E90Q), a Mutant of a Multidrug Binding Transcriptional Repressor | ||||||
![]() | HTH-type transcriptional regulator qacR | ||||||
![]() | TRANSCRIPTION / QacR / multidrug resistance / TetR / dequalinium / DNA-binding / Plasmid / Repressor / Transcription regulation | ||||||
Function / homology | ![]() DNA-binding transcription factor activity / negative regulation of DNA-templated transcription / DNA binding Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Brooks, B.E. | ||||||
![]() | ![]() Title: Formal electrostatic interactions do not govern QacR-cation affinity Authors: Brooks, B.E. / Hardie, K.M. / Brown, M.H. / Skurray, R.A. / Brennan, R.G. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 158.1 KB | Display | ![]() |
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PDB format | ![]() | 125 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 3bqzC ![]() 3br0C ![]() 3br2C ![]() 3br3C ![]() 3br5C ![]() 3br6C ![]() 1jt6S ![]() 3br4 S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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2 | ![]()
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3 | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 22982.037 Da / Num. of mol.: 4 / Mutation: C72S,E90Q,C141S Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #2: Chemical | ChemComp-SO4 / #3: Chemical | ChemComp-DEQ / | #4: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 3.69 Å3/Da / Density % sol: 66.64 % |
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Crystal grow | Temperature: 273 K / Method: vapor diffusion, hanging drop / pH: 4.6 Details: 1:1 10mg/ml protein with 2.3M Ammonium sulfate with 100mM Sodium Acetate pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 273K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: ADSC QUANTUM 315 / Detector: CCD / Date: Oct 2, 2003 / Details: Double Crystal Si(111) |
Radiation | Monochromator: Double Crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1 Å / Relative weight: 1 |
Reflection | Resolution: 3.31→82.06 Å / Num. obs: 21054 / % possible obs: 100 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 2 / Redundancy: 7 % / Rsym value: 0.079 / Net I/σ(I): 8.9 |
Reflection shell | Resolution: 3.31→3.49 Å / Redundancy: 7.2 % / Mean I/σ(I) obs: 2.01 / Num. unique all: 309 / Rsym value: 0.324 / % possible all: 100 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB entry 1jt6 Resolution: 3.31→73.92 Å / Cor.coef. Fo:Fc: 0.919 / Cor.coef. Fo:Fc free: 0.847 / SU B: 21.7 / SU ML: 0.367 / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / ESU R Free: 0.509 / Stereochemistry target values: Engh & Huber / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 58.505 Å2
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Refine analyze | Luzzati coordinate error free: 0.5 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 3.31→73.92 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 3.31→3.396 Å / Total num. of bins used: 20
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