X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7
Temperature 293.0
Details 2.1 M ammonium sulphate, 120 mM sodium acetate, 100 mM calcium, prepared by soaking of locked, metal-free concanavalin A crystals (1DQ0) with calcium, pH 7.0, temperature 293.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 62.96 α = 90
b = 87.31 β = 90
c = 88.94 γ = 90
Symmetry
Space Group I 2 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 291
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1999-04-20
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH2R -- -- --

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
2.15 25 99.4 0.104 -- -- 6.0 13518 13518 0.0 -3.0 25.4
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)
2.15 2.25 99.9 0.375 -- 5.2 6.0 1340

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
-- 2.15 25.0 -3.0 0.0 13517 13517 1352 99.4 0.182 0.182 0.182 0.276 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 2.15 2.25 -- -- -- 0.227 0.323 -- 99.9
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 25.03
RMS Deviations
Key Refinement Restraint Deviation
x_dihedral_angle_d 27.0
x_bond_d 0.013
x_improper_angle_d 1.9
x_angle_deg 1.8
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1809
Nucleic Acid Atoms 0
Heterogen Atoms 2
Solvent Atoms 86

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
X-PLOR model building
X-PLOR refinement version: 3.851
X-PLOR phasing