2WG1

TERNARY COMPLEX OF THE AGED CONJUGATE OF TORPEDO CALIFORNICA ACEYLCHOLINESTERASE WITH SOMAN AND 2-PAM


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1EA5PDB ENTRY 1EA5

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
15.8277ACHE WAS CRYSTALLIZED IN 34% PEG200, 150 MM MES, PH 6, 4 DEG. C. THE CRYSTAL WAS SOAKED FOR 2 HOURS IN 1.3 MM SOMAN, AT PH 6, 4 DEG C. THEN FOR 22 HOURS IN 10 MM 2-PAM, AT PH 6, 4 DEG C.. THEN FLASH-COOLED IN LN2.
Crystal Properties
Matthews coefficientSolvent content
3.868

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 111.91α = 90
b = 111.91β = 90
c = 137.17γ = 120
Symmetry
Space GroupP 31 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC CCD2007-04-06MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID14-2ESRFID14-2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.245.799.50.0816.15.550657-334.7
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.22.399.40.53.35.6

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1EA52.22048171248699.640.1680.165810.2118RANDOM31.192
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
1.980.991.98-2.97
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg32.753
r_dihedral_angle_4_deg18.036
r_dihedral_angle_3_deg15.304
r_dihedral_angle_1_deg6.201
r_scangle_it3.106
r_scbond_it1.987
r_angle_refined_deg1.39
r_mcangle_it1.307
r_mcbond_it0.696
r_chiral_restr0.093
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg32.753
r_dihedral_angle_4_deg18.036
r_dihedral_angle_3_deg15.304
r_dihedral_angle_1_deg6.201
r_scangle_it3.106
r_scbond_it1.987
r_angle_refined_deg1.39
r_mcangle_it1.307
r_mcbond_it0.696
r_chiral_restr0.093
r_bond_refined_d0.013
r_gen_planes_refined0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4244
Nucleic Acid Atoms
Solvent Atoms555
Heterogen Atoms217

Software

Software
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
REFMACphasing