X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 4.8
Details CRYSTALS OF THE HEWL COVALENT INTERMEDIATE WERE GROWN BY THE HANGING-DROPLET VAPOUR DIFFUSION METHOD OVER 4 DAYS AT 16 C. THE DROPLET CONTAINED 2.5 UL OF A SOLUTION OF 7.5 MG/ML HEWL(E35Q), 20 MM NAG2FGLCF, 200 MM SODIUM ACETATE (NAOAC) BUFFER PH 5.0 AND 2.5 UL OF RESERVOIR SOLUTION (200MM) NAOAC, CONTAINING 4.0 % NACL (W/V), PH 4.5 WAS SUSPENDED OVER THE RESERVOIR SOLUTION.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 78.63 α = 90
b = 78.63 β = 90
c = 36.7 γ = 90
Symmetry
Space Group P 43 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RAXIS OSMIC MIRRORS 2000-06-15
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
1.64 20 99.3 0.05 -- -- 5.2 -- 14536 -- -- --
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)
1.64 1.7 96.3 0.19 -- 4.6 2.5 --

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 1.64 18.0 -- -- -- 13781 738 99.3 -- 0.172 0.17 0.222 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 1.64 1.68 -- 60 949 0.234 0.261 -- --
RMS Deviations
Key Refinement Restraint Deviation
r_bond_refined_d 0.013
r_mcbond_it 1.825
r_scangle_it 4.199
r_angle_other_deg 1.823
r_gen_planes_refined 0.007
r_symmetry_vdw_refined 0.215
r_mcangle_it 2.822
r_scbond_it 2.663
r_xyhbond_nbd_refined 0.231
r_chiral_restr 0.135
r_metal_ion_refined 0.089
r_symmetry_hbond_refined 0.207
r_nbd_refined 0.237
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1001
Nucleic Acid Atoms 0
Heterogen Atoms 26
Solvent Atoms 205

Software

Software
Software Name Purpose
REFMAC refinement version: 5.0
DENZO data reduction
SCALEPACK data scaling
CCP4 phasing