X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7
Details PROTEIN WAS CRYSTALLIZED FROM .63 M NAH2PO4/1.17 M K2HPO4, 10 MM NH4CL, PH 7.0

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 54.5 α = 90
b = 64.2 β = 90
c = 158 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 287
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1997-04
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL9-1 -- SSRL BL9-1

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 -- 78.0 0.055 -- -- 2.5 -- 30701 -- -- --

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 AND MOLECULAR REPLACEMENT 2.0 20.0 -- 0.0 30701 30701 -- 78.0 -- -- 0.217 -- --
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model TNT BCORREL V1.0
RMS Deviations
Key Refinement Restraint Deviation
t_nbd 0.027
t_it 4.553
t_gen_planes 0.017
t_trig_c_planes 0.009
t_incorr_chiral_ct 0.0
t_dihedral_angle_d 19.14
t_angle_deg 2.891
t_bond_d 0.022
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2934
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 124

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
PROTEIN, SIGMAA, RSS Structure Solution
TNT V. 5-F Structure Refinement
Software
Software Name Purpose
TNT version: 5-F refinement
RSS model building
SIGMAA model building
PROTEIN model building