X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.5
Temperature 277.0
Details 1M sodium formate, 0.1M HEPES, 10% glycerol, 1:5 molar ratio of vasopressin to neurophysin, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 50.9 α = 90
b = 50.9 β = 90
c = 105.8 γ = 120
Symmetry
Space Group P 61 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 110
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH YALE/MSC 1996-07-01
Diffraction Radiation
Monochromator Protocol
Ni Filter SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH3R -- -- --

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
2.3 999 96.2 0.058 -- -- -- -- n/a -3.0 -- --

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 2.3 15.0 -- 0.0 6467 6467 542 92.2 0.234 0.234 0.234 0.299 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 26.6
RMS Deviations
Key Refinement Restraint Deviation
x_dihedral_angle_d 26.6
x_improper_angle_d 1.33
x_bond_d 0.01
x_angle_deg 1.5
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.3
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 600
Nucleic Acid Atoms 0
Heterogen Atoms 3
Solvent Atoms 29

Software

Software
Software Name Purpose
MAR data collection
X-GEN data reduction
AMoRE phasing
X-PLOR refinement version: 3.1
MAR data reduction
X-GEN data scaling