X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Temperature 281.0
Details PROTEIN WAS CRYSTALLIZED AT 8 DEGREES IN 50MM HEPES PH 7.5, 6-8% PEG 4000, 5MM BETA- MERCAPTOETHANOL, temperature 281K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 114.13 α = 90
b = 114.13 β = 90
c = 32.59 γ = 90
Symmetry
Space Group I 4

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 110
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1998-05
Diffraction Radiation
Monochromator Protocol
SINGLE CRYSTAL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X8C -- NSLS X8C

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
1.75 50 99.8 0.062 0.054 -- 7.8 -- 21532 -- 0.0 17.1
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)
1.75 1.83 99.8 0.267 0.23 3.3 7.5 --

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 1.75 50.0 -- 0.0 -- 21532 1052 99.7 -- 0.214 0.214 0.236 RANDOM
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 1.75 1.83 -- 153 2507 0.253 0.278 0.022 99.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 24.3
Anisotropic B[1][1] 3.2
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 3.2
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -6.4
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 0.73
c_scbond_it 0.41
c_mcangle_it 1.13
c_mcbond_it 0.64
c_improper_angle_d 0.7
c_bond_d 0.005
c_angle_deg 1.3
c_dihedral_angle_d 25.5
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.21
Luzzati Sigma A (Observed) 0.13
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.23
Luzzati Sigma A (R-Free Set) 0.15
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1062
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 143

Software

Computing
Computing Package Purpose
DENZO, MOSFLM Data Reduction (intensity integration)
CCP4 Data Reduction (data scaling)
CNS 0.3, SOLVE Structure Solution
CNS 0.3 Structure Refinement
Software
Software Name Purpose
CNS version: 0.3 refinement
SOLVE model building
CNS version: 0.3 model building