X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.5
Temperature 293.0
Details 0.1M HEPES pH 6.5, 2% PEG 400, 2M ammonium sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 35.1 α = 90
b = 48.2 β = 90
c = 90.2 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1998-02
Diffraction Radiation
Monochromator Protocol
bent cylindrical Si-mirror (Rh coating), Si(111) double-crystal monochromator MAD
58 cm long, Pt-coated, fused silica, vertical focussing mirror, Cylindrically bent triangular Si(111) asymmetric cut, horizontal focus monochromator SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL7-1 1.08 SSRL BL7-1

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot
1.14 20 88.4 0.062 -- -- 3.49 50056 50056 -- 0.0 --
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
1.14 1.18 80.8 0.291 -- 2.64 -- 4512

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
MAD 1.14 20.0 -- 0.0 50042 50042 5037 88.4 -- -- -- 0.151 random
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model anisotropic
RMS Deviations
Key Refinement Restraint Deviation
s_rigid_bond_adp_cmpnt 0.006
s_from_restr_planes 0.029
s_approx_iso_adps 0.11
s_anti_bump_dis_restr 0.019
s_non_zero_chiral_vol 0.082
s_zero_chiral_vol 0.09
s_angle_d 0.03
s_bond_d 0.014
Coordinate Error
Parameter Value
Number Disordered Residues 8.0
Occupancy Sum Hydrogen 1018.0
Occupancy Sum Non Hydrogen 1195.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1077
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 154

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
SOLVE, SHARP, SOLOMON Structure Solution
SHELXL-97 Structure Refinement
Software
Software Name Purpose
SHELXL-97 refinement
SOLOMON model building
SHARP model building
SOLVE model building
SCALEPACK data reduction
DENZO data collection