X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 1.5
Details 20MG OF LYOPHILIZED PROTEIN WERE DISSOLVED IN 1ML OF DOUBLE-DISTILLED WATER. USING THE HANGING DROP METHOD WITH DROPS OF 2MUL PROTEIN SOLUTION (20 MG/ML) AND 2MUL RESERVOIR SOLUTION (0.1-0.5 M NACL ADJUSTED TO PH 1.3 WITH HYDROCHLORIC ACID), YIELDED TUFT-SHAPED AGGLOMERATES OF ESSENTIALLY ONE-DIMENSIONAL CRYSTALS. STREAK SEEDING {EM VIA} A CAT WHISKER AFTER TOUCHING THESE AGGLOMERATES GAVE SINGLE CRYSTALS WITH DIMENSIONS UP TO 0.1 X 0.01 X 0.01MM^3

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 25.68 α = 90
b = 40.78 β = 90
c = 60.95 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 MAR scanner 345 mm plate -- 1999-02-15
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X11 -- EMBL/DESY, Hamburg X11

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
0.93 40 93.5 0.054 -- -- 6.9 -- 261064 -- -- --
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)
0.93 0.95 79.9 0.326 -- 4.3 3.5 --

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 0.93 10.0 -- 0.0 2054 -- 5 93.5 0.1029 0.1026 -- 0.13 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
s_anti_bump_dis_restr 0.026
s_rigid_bond_adp_cmpnt 0.005
s_bond_d 0.015
s_from_restr_planes 0.341
s_zero_chiral_vol 0.082
s_similar_adp_cmpnt 0.033
s_approx_iso_adps 0.087
s_non_zero_chiral_vol 0.097
s_angle_d 0.033
Coordinate Error
Parameter Value
Number Disordered Residues 15.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 558
Nucleic Acid Atoms 0
Heterogen Atoms 13
Solvent Atoms 159

Software

Software
Software Name Purpose
SHELXL-97 refinement
DENZO data reduction
SCALEPACK data scaling