X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion
pH 8.2
Details MOLECULE: ALPHA-1,4-GLUCAN-4-GLUCANOHYDROLASE FROM BACILLUS LICHENIFORMIS. VAPOR DIFFUSION, ROOM TEMPERATURE PROTEIN SOLUTION: 15 MG/ML BLA IN 0.4 M SODIUM CITRATE 2.5 MM EDTA, PH 8.2 RESERVOIR: 0.66 M SODIUM CITRATE, 2.5 MM EDTA, PH 8.2 CALCIUM REMOVAL BY EDTA LEADS TO A CLEAVAGE OF BLA AFTER GLU 189 DUE TO TRACE AMOUNTS OF A GLU-C-ENDOPEPTIDASE PRESENT IN THE PREPARATION (SEE PAPER)., vapor diffusion

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 119.8 α = 90
b = 119.8 β = 90
c = 85.4 γ = 90
Symmetry
Space Group P 43 21 2

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1994-09-09
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- -- -- --

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
2.2 25 -- 0.045 -- -- 1.9 -- n/a -- -- --

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
-- 2.2 8.0 -- 0.0 -- 28093 -- 89.7 -- 0.167 0.167 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 20.37
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.32
x_bond_d 0.009
x_angle_deg 1.4
x_dihedral_angle_d 20.4
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3800
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 237

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
X-PLOR 3.1 Structure Solution
X-PLOR 3.1 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.1 refinement
X-PLOR version: 3.1 model building