X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Fiber Seeding Using Cryshed Initial Crystals As Seeds
pH 7
Details 9% (W/V) 1M AMMONIUM PHOSPHATE, PH 6.0, AND 92% OF A 10% (W/V) SOLUTION OF PEG 6000 IN 50MM HEPES (PH 7.0). LARGE CRYSTALS (0.2 X 0.2 X 0.5 MM) WERE GROWN BY FIBER SEEDING, USING CRUSHED INITIAL CRYSTALS AS SEEDS., fiber seeding using cryshed initial crystals as seeds

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 71.18 α = 90
b = 79.38 β = 90
c = 93.81 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 120
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM SLITS 1997-12
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL1-5 -- SSRL BL1-5

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
1.57 -- 96.6 0.0569 -- -- 4.1 -- 72263 -- -- --
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)
1.57 1.6 90.3 0.345 -- 2.05 2.8 --

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
COMBINED MIR (SIRAS) AND MAD INITIAL REFINEMENT WITH REFMAC AND X-PLOR. FINAL REFINEMENT WITH SHELXL. 1.57 22.5 -- 0.0 72263 -- 7306 96.6 0.1867 0.1785 -- 0.2618 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
s_bond_d 0.008
s_non_zero_chiral_vol 0.048
s_similar_adp_cmpnt 0.058
s_approx_iso_adps 0.086
s_similar_dist 0.0
s_from_restr_planes 0.028
s_anti_bump_dis_restr 0.014
s_angle_d 0.025
s_zero_chiral_vol 0.035
s_rigid_bond_adp_cmpnt 0.007
Coordinate Error
Parameter Value
Number Disordered Residues 0.0
Occupancy Sum Hydrogen 0.0
Occupancy Sum Non Hydrogen 4082.4
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3657
Nucleic Acid Atoms 0
Heterogen Atoms 2
Solvent Atoms 424

Software

Software
Software Name Purpose
MOSFLM data reduction
SCALA data scaling
SHELXL-97 model building
SOLVE phasing
SHELXL-97 refinement
CCP4 data scaling version: (SCALA)
SHELXL-97 phasing