X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.4
Details PROTEIN WAS CRYSTALLIZED FROM 10-14 % PEG 4000, 10-14 % MPD, 100 MM CITRATE/PHOSPHATE BUFFER, PH 6.4

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 41.08 α = 90
b = 156.82 β = 90
c = 43.61 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRRORS 1993-11
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON MPG/DESY, HAMBURG BEAMLINE BW6 -- MPG/DESY, HAMBURG BW6

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
1.6 20 88.0 0.053 0.053 -- 2.6 -- 33644 -- 2.0 --
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)
1.6 1.64 73.7 0.053 0.22 3.1 1.2 --

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
MIR 1.6 8.0 -- 0.0 32395 32395 -- 88.0 -- -- 0.178 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 14.9
RMS Deviations
Key Refinement Restraint Deviation
p_angle_d 0.044
p_planar_d 0.054
p_plane_restr 0.015
p_planar_tor 2.704
p_scbond_it 1.64
p_staggered_tor 13.07
p_mcbond_it 1.3
p_transverse_tor 25.0
p_chiral_restr 0.082
p_multtor_nbd 0.212
p_bond_d 0.021
p_mcangle_it 2.05
p_singtor_nbd 0.169
p_scangle_it 2.26
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.18
Luzzati Sigma A (Observed) 0.18
Luzzati Resolution Cutoff (Low) 8.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2315
Nucleic Acid Atoms 0
Heterogen Atoms 1
Solvent Atoms 230

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 Data Reduction (data scaling)
MLPHARE Structure Solution
PROLSQ Structure Refinement
Software
Software Name Purpose
MOSFLM data collection
CCP4 data reduction
MLPHARE model building
PROLSQ refinement