X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Hanging Drop
pH 7.7
Temperature 277.0
Details THE SRPPHI14-9 PROTEIN WAS CRYSTALLIZED (BIRSE ET AL., FEBS LETTERS, 1996) BY THE HANGING DROP METHOD IN 2.0 M NAH2/K2H PO4, PH 7.7, 2% MPD, 1.0 MM NAN3 AT 4 DEGREES C WITH A FINAL PROTEIN CONCENTRATION OF 5-8 MG ML-1. CRYSTALS FORMED OVER 2-3 WEEKS AND WERE TYPICALLY 150 X 150 X 300 MM3 IN SPACE, hanging drop, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 69.02 α = 90
b = 69.02 β = 90
c = 90.44 γ = 90
Symmetry
Space Group P 43 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH TOROIDAL MIRRORS 1996-09
Diffraction Radiation
Monochromator Protocol
CU FILTER --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID2 0.900, 1.100 ESRF ID2

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
2.53 30 98.7 0.069 0.069 -- 5.0 -- 36596 -- 3.0 --
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)
2.53 2.6 97.2 0.0218 0.0218 2.4 4.2 --

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
MULTIPLE ISOMORPHOUS REPLACEMENT 2.53 20.0 -- 2.0 -- 7634 -- 98.7 -- 0.248 0.248 0.299 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 2.53 2.64 -- -- -- -- -- -- 97.2
Coordinate Error
Parameter Value
Luzzati Resolution Cutoff (Low) 20.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1383
Nucleic Acid Atoms 0
Heterogen Atoms 9
Solvent Atoms 17

Software

Computing
Computing Package Purpose
DENZO, MOSFLM Data Reduction (intensity integration)
CCP4 Data Reduction (data scaling)
X-PLOR 3.8 Structure Solution
X-PLOR 3.8 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.8 refinement
X-PLOR version: 3.8 model building