X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Temperature 17.0
Details HANGING DROP VAPOR DIFFUSION WITH EQUAL VOLUMES OF PROTEIN AND RESERVOIR SOLUTIONS. PROTEIN SOLUTION: 5-20 MG/ML PROTEIN IN 0.02 MOLAR TRIS (PH 8.0-8.5) , 0.1-0.2 MOLAR SODIUM CHLORIDE. 0.005 MOLAR 2-MERCAPTOETHANOL RESERVOIR SOLUTION: 8-20% (W/V) PEG 8000, 0.2 MOLAR TRIS (PH 7.5-8.0), 0.05-0.2 MOLAR ZINC ACETATE., VAPOR DIFFUSION, HANGING DROP, temperature 17K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 36.35 α = 90
b = 46.91 β = 90
c = 54.35 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
CCD ADSC -- 1999-02-01
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X26C -- NSLS X26C

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
1.3 30 98.0 -- 0.026 -- 6.0 -- 24113 -- -9.0 --
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)
1.3 1.35 96.0 0.23 -- 2.3 -- --

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
MAD PROGRAM PACKAGE USED (IF ANY) : SHARP STARTING MODEL FOR MOLECULAR REPLACEMENT: NONE 1.3 6.0 -- -- 39179 -- 3918 87.0 -- 0.169 -- 0.199 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
s_from_restr_planes 0.032
s_similar_adp_cmpnt 0.068
s_zero_chiral_vol 0.021
s_approx_iso_adps 0.095
s_non_zero_chiral_vol 0.03
s_rigid_bond_adp_cmpnt 0.004
s_bond_d 0.005
s_angle_d 0.019
Coordinate Error
Parameter Value
Occupancy Sum Hydrogen 741.0
Occupancy Sum Non Hydrogen 853.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 745
Nucleic Acid Atoms 0
Heterogen Atoms 10
Solvent Atoms 106

Software

Software
Software Name Purpose
SHARP phasing
SHELXL-97 refinement
DENZO data reduction
SCALEPACK data scaling