3D3A

Crystal structure of a beta-galactosidase from Bacteroides thetaiotaomicron


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP729830% PEG 1500, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 298.0K
Crystal Properties
Matthews coefficientSolvent content
2.8757.14

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 117.017α = 90
b = 117.017β = 90
c = 59.711γ = 90
Symmetry
Space GroupP 43

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315Mirrors2008-04-21MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X29A0.97900NSLSX29A

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge 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
12.135092.90.12211.94.6423064230630.5
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.132.2157.60.293122607

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONSADTHROUGHOUT2.1532.4640142200590.70.2140.2140.254RANDOM24.7
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]
-3.76-3.767.53
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d24.3
c_angle_deg1.3
c_improper_angle_d0.81
c_bond_d0.006
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4873
Nucleic Acid Atoms
Solvent Atoms384
Heterogen Atoms

Software

Software
Software NamePurpose
CNSrefinement
CBASSdata collection
HKL-2000data reduction
HKL-2000data scaling
SHELXDphasing
SHARPphasing
ARP/wARPmodel building