X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8
Details 1.3 M SODIUM CITRATE, 0.1 M GLYCINE AT PH 8.0

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 112.44 α = 90
b = 112.44 β = 90
c = 112.44 γ = 90
Symmetry
Space Group I 4 3 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 103
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH BENT CRYSTAL MONOCHROMATOR 1997-04-26
Diffraction Radiation
Monochromator Protocol
GE(111) --
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
1.4 26.5 99.9 0.047 -- -- 14.5 -- 24157 -- -- --
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)
1.4 1.5 100.0 0.511 -- 3.42 10.6 --

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
ANOMALOUS DISPERSION TO FIND THE TWO FE ATOMS USING 2.3 ANGSTROM CU ROTATING ANODE/MULTIWIRE DATA. THE REMAINING ATOMS WERE THEN FOUND BY ROTATING A FRAGMENT (FROM ENTRY 1FXL) ABOUT THE IRON ATOMS TO MINIMIZE THE CORRELATION COEFFICIENT BETWEEN F(OBS) AND F(CALC). 1.4 10.0 -- 0.0 24070 -- 1202 99.9 0.1466 0.1464 -- 0.1811 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
s_non_zero_chiral_vol 0.063
s_bond_d 0.012
s_anti_bump_dis_restr 0.056
s_angle_d 0.03
s_similar_adp_cmpnt 0.054
s_from_restr_planes 0.029
s_rigid_bond_adp_cmpnt 0.004
s_zero_chiral_vol 0.066
s_approx_iso_adps 0.098
Coordinate Error
Parameter Value
Number Disordered Residues 3.0
Occupancy Sum Hydrogen 647.0
Occupancy Sum Non Hydrogen 796.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 708
Nucleic Acid Atoms 0
Heterogen Atoms 4
Solvent Atoms 126

Software

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