3ERE

Crystal structure of the arginine repressor protein from Mycobacterium tuberculosis in complex with the DNA operator


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2FZFPDB entries 2FZF, 1B4A
experimental modelPDB 1B4APDB entries 2FZF, 1B4A

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION5.52951M Ammonium sulfate, 100 mM Bis-tris buffer, 1% PEG 3350, pH 5.5, VAPOR DIFFUSION, temperature 295K
Crystal Properties
Matthews coefficientSolvent content
3.4664.46

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 94.128α = 90
b = 94.128β = 90
c = 147.014γ = 120
Symmetry
Space GroupP 63 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 3152008-01-25MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 8.3.11.11588ALS8.3.1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.55099.80.0640.0643611.7139521395276.4
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.52.5998.70.8020.8022.110.21337

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB entries 2FZF, 1B4A2.540139501391770099.80.22740.22740.2554random
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
RMS Deviations
KeyRefinement Restraint Deviation
c_angle_deg1.1061
c_bond_d0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1122
Nucleic Acid Atoms650
Solvent Atoms93
Heterogen Atoms15

Software

Software
Software NamePurpose
ADSCdata collection
MOLREPphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling