3ALF

Crystal Structure of Class V Chitinase from Nicotiana tobaccum


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION8.5293100mM Tris-HCl, 1.7-2.2M ammonium dihydrogen phosphate, pH 8.5, VAPOR DIFFUSION, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.4850.5

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 62.395α = 90
b = 120.292β = 90
c = 51.912γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray95CCDADSC QUANTUM 2702009-11-11MSINGLE WAVELENGTH
21x-ray95CCDADSC QUANTUM 2702010-02-08MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONPHOTON FACTORY BEAMLINE BL-17A0.97897Photon FactoryBL-17A
2SYNCHROTRONPHOTON FACTORY BEAMLINE BL-17A0.98Photon FactoryBL-17A

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
1,21.25098.50.07549.513.5120764120764
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)
1.21.2296.60.2599.29.55824

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 DIFFRACTIONSADTHROUGHOUT1.239.91114648120697604998.30.1760.1760.187RANDOM7.4
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]
-0.270.41-0.15
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d24.6
c_improper_angle_d2.32
c_angle_deg1.3
c_bond_d0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2725
Nucleic Acid Atoms
Solvent Atoms401
Heterogen Atoms40

Software

Software
Software NamePurpose
HKL-2000data collection
SHARPphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling