X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 5.1
Details 4 MICROLITERS OF 8.7 MG/ML MAB 61.1.3, 2 MICROLITERS OF 50 MILLIMOLAR SODIUM CITRATE PH 5, 1 MICROLITER OF N-TRIDECYL-B-D-MALTOSIDE, AND 5 MICROLITERS OF 12% PEG 3350 EQUILIBRATED AGAINST 700 MICROLITERS OF 12% PEG 3350, AT ROOM TEMPERATURE (CRYSCHEM PLATE)., pH 5.1

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 66.65 α = 90
b = 190.66 β = 109.66
c = 73.1 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 291
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRROR 1995-06
Diffraction Radiation
Monochromator Protocol
CRYSTAL TYPE SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X12C -- NSLS X12C

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
3.2 99 95.6 0.145 -- -- 3.3 -- 27971 -- -- 45.2

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
MOLECULAR REPLACEMENT 3.2 20.0 -- 3.0 -- 21145 2064 75.0 -- 0.211 0.211 0.327 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 3.2 3.4 -- 175 1815 0.284 0.396 0.03 42.6
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model GROUP
Mean Isotropic B 57.1
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.009
x_angle_deg 1.6
x_dihedral_angle_d 26.2
x_improper_angle_d 1.35
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.37
Luzzati Sigma A (Observed) 0.53
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.58
Luzzati Sigma A (R-Free Set) 0.88
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 10032
Nucleic Acid Atoms 0
Heterogen Atoms 220
Solvent Atoms 0

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
X-PLOR model building version: 3.8
X-PLOR refinement version: 3.8
X-PLOR phasing version: 3.8