1I1X

1.11 A ATOMIC RESOLUTION STRUCTURE OF A THERMOSTABLE XYLANASE FROM THERMOASCUS AURANTIACUS


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1TUX1TUX (1.8 A)

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.2293CRYSTALS WERE GROWN BY SITTING DROP AGAINST 12% AMMONIUM SULPHATE SOLUTION AT THE SAME BUFFER CONDITION IN THE RESERVOIR., pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.0339.32

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 41.52α = 90
b = 68.09β = 113.56
c = 51.44γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray293CCDADSC QUANTUM 4MIRROR1999-02-28MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X9B1.009NSLSX9B

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
11.112587.50.05220.63.290855
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)
1.111.1581.30.363

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R1TUX (1.8 A)1.11108562885628174582.70.09940.1236RANDOM
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]
Coordinate Error
Structure Solution MethodRefinement High ResolutionRefinement Low Resolution
292119.22536.06
RMS Deviations
KeyRefinement Restraint Deviation
s_non_zero_chiral_vol0.111
s_approx_iso_adps0.1
s_zero_chiral_vol0.085
s_similar_adp_cmpnt0.04
s_angle_d0.031
s_from_restr_planes0.0286
s_bond_d0.016
s_rigid_bond_adp_cmpnt0.006
s_similar_dist
s_anti_bump_dis_restr
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4509
Nucleic Acid Atoms
Solvent Atoms267
Heterogen Atoms

Software

Software
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
AMoREphasing
SHELXL-97refinement
HKL-2000data reduction