X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.4
Details THE PROTEIN CRYSTALLIZED IN 18% PEG 8000, 0.2M MG(OAC)2, 0.1M HEPES, PH7.0. THE PROTEIN CONCENTRATION WAS 10MG/ML IN A BUFFER OF 50MM NACL, 1MM EDTA, 10MM DTT, 1MM BENZAMIDINE, 1UM PEPSTATIN, 10UG/ML LEUPEPTIN, 25MM HEPES,PH7.4.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 45.76 α = 90
b = 84.93 β = 90
c = 123.91 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 MARRESEARCH MIRRORS 1996-04-14
Diffraction Radiation
Monochromator Protocol
-- --
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
2.1 37.3 86.0 0.042 -- -- 8.1 -- 25393 -- -- --
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)
2.09 2.16 65.6 0.242 -- 5.3 -- --

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 2.1 6.0 -- 2.0 -- 23950 -- -- -- 0.212 0.212 0.244 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 29.7
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.01
x_angle_deg 1.58
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2833
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 129

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
X-PLOR Structure Solution
X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement
X-PLOR model building