3KKE

Crystal structure of a LacI family transcriptional regulator from Mycobacterium smegmatis


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION4.6294100mM sodium acetate pH 4.6, 30% PEG 4000, 200mM ammonium acetate, vapor diffusion, temperature 294K
Crystal Properties
Matthews coefficientSolvent content
1.9235.79

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 64.599α = 90
b = 65.468β = 90.72
c = 116.034γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 225 mm CCD2009-10-24MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 31-ID0.97958APS31-ID

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
12.233.36799.20.0830.08314.27.5494764908036.5
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)
2.22.3299.20.3710.37157.57127

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (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 DIFFRACTIONSADTHROUGHOUT2.2204941049000245699.170.1970.1940.247RANDOM39.486
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]
-0.330.030.93-0.6
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.017
r_dihedral_angle_4_deg18.44
r_dihedral_angle_3_deg14.945
r_dihedral_angle_1_deg6.215
r_scangle_it3.687
r_scbond_it2.385
r_angle_refined_deg1.477
r_mcangle_it1.312
r_angle_other_deg0.954
r_mcbond_it0.716
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.017
r_dihedral_angle_4_deg18.44
r_dihedral_angle_3_deg14.945
r_dihedral_angle_1_deg6.215
r_scangle_it3.687
r_scbond_it2.385
r_angle_refined_deg1.477
r_mcangle_it1.312
r_angle_other_deg0.954
r_mcbond_it0.716
r_mcbond_other0.175
r_chiral_restr0.082
r_bond_refined_d0.015
r_gen_planes_refined0.006
r_bond_other_d0.001
r_gen_planes_other0.001
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms8104
Nucleic Acid Atoms
Solvent Atoms127
Heterogen Atoms20

Software

Software
Software NamePurpose
SCALAdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
MAR345data collection
MOSFLMdata reduction
SHELXCDphasing
SHELXEmodel building
MLPHAREphasing
DMphasing