X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 5.4
Details CRYSTALS WERE GROWN AT ROOM TEMPERATURE IN 10 UL HANGING DROPS OF EQUAL VOLUMES OF PROTEIN/INHIBITOR COMPLEX AND THE PRECIPITANT OF 0.75, 1.0 1.5 2.0 M NACL AT PH'S 4.8, 5.0 AND 5.2 (0.1 M ACETATE BUFFER) AND AT PH'S 5.4, 5.6 AND 5.8 (0.1 M CITRATE BUFFER)., vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 60.54 α = 90
b = 88.42 β = 90
c = 46.48 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 298
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS -- 1994-02-28
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- SIEMENS -- -- --

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
2.5 10 98.8 0.132 -- -- 7.0 -- 9119 -- 0.0 --
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)
2.5 2.64 92.5 0.534 -- 2.2 5.5 --

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 2.5 10.0 -- 2.0 -- 7560 -- 82.9 -- -- 0.179 -- --
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1491
Nucleic Acid Atoms 0
Heterogen Atoms 36
Solvent Atoms 164

Software

Software
Software Name Purpose
MERLOT phasing
CEDAR refinement
XENGEN data reduction
XENGEN data scaling