X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details 14.4% PEG 4000, 20% V/V GLYCEROL, 12MM DESULPHO-COA, ADENOSYLCOBALAMIN 16MM,TRIS/HCL 100 MM, PH 7.5 THE CRYSTALS WERE GROWN IN THE PRESENCE OF 2MM EXCESS 5'-DEOXYADENOSYLCOBALAMIN (COENZYME B12) AND 12MM DESULPHO-COA (FINAL CONCENTRATIONS), EQUILIBRATED AGAINST 14% W/V PEG 4000 AND 20% V/V GLYCEROL, 100MM TRIS PH 7.5.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 125.4 α = 90
b = 161.83 β = 90
c = 166.95 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRRORS 1997-07-15
Diffraction Radiation
Monochromator Protocol
NI FILTER SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ELLIOTT GX-13 -- -- --

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
2.62 29 97.1 0.104 0.104 -- 3.4 -- 335799 -- 6.0 54.0
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)
2.62 2.76 97.1 0.446 0.446 3.2 2.9 --

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
MOLECULAR REPLACEMENT 2.62 29.2 -- 0.0 -- 99776 4167 97.5 -- 0.219 0.207 0.283 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 48.0
Anisotropic B[1][1] 4.9
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.2
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.2
RMS Deviations
Key Refinement Restraint Deviation
p_scbond_it 2.6
p_chiral_restr 0.2
p_scangle_it 6.8
p_singtor_nbd 0.13
p_multtor_nbd 0.19
p_planar_d 0.064
p_mcangle_it 4.7
p_plane_restr 0.016
p_angle_d 0.057
p_mcbond_it 2.9
p_bond_d 0.016
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 20506
Nucleic Acid Atoms 0
Heterogen Atoms 276
Solvent Atoms 1525

Software

Software
Software Name Purpose
REFMAC refinement
MOSFLM data reduction
SCALA data scaling
AMoRE phasing