X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 5.5
Temperature 277.15
Details ammonium acetate, beta-mercaptoethanol, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277.15K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 45.2 α = 113.47
b = 50.85 β = 99.21
c = 58.43 γ = 102.26
Symmetry
Space Group P 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH mirrors 1999-10-01
Diffraction Radiation
Monochromator Protocol
Yale Mirrors MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE BM30A 0.979, 0.980, 0.972 ESRF BM30A

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
2.1 32.08 94.2 -- -- -- -- 24726 21708 -- 0.0 26.5

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 2.1 32.08 -- 0.0 21708 21708 1249 94.2 -- -- 0.243 0.27 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 2.1 2.23 -- 156 3231 0.284 0.283 0.023 76.8
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 43.8
Anisotropic B[1][1] -5.72
Anisotropic B[1][2] -2.37
Anisotropic B[1][3] 4.83
Anisotropic B[2][2] -3.44
Anisotropic B[2][3] 2.7
Anisotropic B[3][3] 9.16
RMS Deviations
Key Refinement Restraint Deviation
c_scbond_it 1.82
c_bond_d 0.016
c_improper_angle_d 1.43
c_mcangle_it 2.72
c_mcbond_it 1.58
c_angle_deg 2.2
c_scangle_it 2.85
c_dihedral_angle_d 21.9
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.3
Luzzati Sigma A (Observed) 0.23
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.34
Luzzati Sigma A (R-Free Set) 0.26
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3118
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 0

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
SHARP phasing
CNS refinement version: 1.0