X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.6
Temperature 293.0
Details EQUILIBRATION AGAINST RESERVOIR OF 20% (V/V) DIOXANE, 2% (V/V) ETHYLENE GLYCOL AND 5 MM DTT. DROPS WERE FORMED BY MIXING 2.5 UL PROTEIN-DNA COMPLEX (10 MG/ML PROTEIN; 1.1 FOLD MOLAR EXCESS DNA) IN BUFFER (20 MM TRIS-HCL PH 7.6, 300 MM NACL, 0.1 MM EDTA, 1 MM DTT, 0.02% NA AZIDE) WITH 2.5 UL DISTILLED WATER, 2.5 UL RESERVOIR SOLUTION AND 1.5 UL 350 MM N-HEPTYL-B-D-GLUCOSIDE, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 80.29 α = 90
b = 87.82 β = 90
c = 99.45 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 RIGAKU RAXIS -- 1998-09-01
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU200 -- -- --

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
1.7 30 99.4 0.059 -- -- 3.7 77509 77509 0.0 -3.0 20.9
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)
1.7 1.76 95.4 0.519 -- 2.1 2.2 --

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
MIR 1.7 8.0 -- 2.0 77509 75657 3845 99.4 -- 0.19 0.19 0.253 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 1.7 1.78 -- 458 8424 0.402 0.45 -- 96.9
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 23.33
Anisotropic B[1][1] -0.73
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] -0.096
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 4.462
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.01
x_angle_deg 1.6
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.197
Luzzati Resolution Cutoff (Low) 8.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4963
Nucleic Acid Atoms 490
Heterogen Atoms 60
Solvent Atoms 474

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
X-PLOR Structure Solution
X-PLOR 3.851 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.851 refinement
X-PLOR model building