4COT

The importance of the Abn2 calcium cluster in the endo-1,5- arabinanase activity from Bacillus subtilis


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2X8FPDB ENTRY 2X8F

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSIONCRYSTALS OF THE H318Q PROTEIN (14 MG/ML) WERE OBTAINED USING THE VAPOUR DIFFUSION METHOD WITH CRYSTALLIZATION CONDITIONS 10 MM NICL2;100 MM TRIS-HCL PH 8.5, AND 20 % PEG 2000 MME.
Crystal Properties
Matthews coefficientSolvent content
2.1242.11

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 51.19α = 90
b = 76.552β = 112.6
c = 58.073γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray110CCDADSC QUANTUM 315rMIRRORSMSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID14-4ESRFID14-4

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
11.930.1697.70.0512.63.131885223.55
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)
11.9291.60.293.72.6

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 2X8F1.930.1641.3531847162197.520.17330.1710.21426.13
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
f_dihedral_angle_d13.879
f_angle_d0.93
f_chiral_restr0.037
f_bond_d0.005
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3500
Nucleic Acid Atoms
Solvent Atoms306
Heterogen Atoms9

Software

Software
Software NamePurpose
PHENIXrefinement
iMOSFLMdata reduction
SCALAdata scaling
PHASERphasing