X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6
Temperature 20.0
Details COMPcc (16 mg/ml) in 20 mM sodium phosphate, 200 mM NaCl (pH 7.5) precipitant: 7-8% PEG 8000, 50 mM sodium cacodylate (pH 6.0), 50 mM sodium acetate, 50 mM calcium acetate , VAPOR DIFFUSION, HANGING DROP, temperature 20.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 38.47 α = 90
b = 49.47 β = 103.84
c = 54.98 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 298
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1997-12-01
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ELLIOTT GX-20 1.5418 -- --

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
2.7 3 86.0 0.132 -- -- 3.71 5464 5464 -- -- 32.2
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)
2.7 3.0 87.6 -- -- -- -- 5464

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
-- 2.7 3.0 -- 0.0 5464 5464 0 87.6 0.195 -- 0.195 -- --
RMS Deviations
Key Refinement Restraint Deviation
x_angle_deg 1.2
x_improper_angle_d 1.1
x_bond_d 6.0E-4
x_dihedral_angle_d 18.68
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1830
Nucleic Acid Atoms 0
Heterogen Atoms 21
Solvent Atoms 152

Software

Software
Software Name Purpose
DENZO data reduction
ROTAVATA-AGROVATA data reduction
AMoRE phasing
X-PLOR refinement version: 3.1
CCP4 data scaling version: (AGROVATA
ROTAVATA) data scaling