1XLU

X-Ray Structure Of Di-Isopropyl-Phosphoro-Fluoridate (Dfp) Inhibited Butyrylcholinesterase after Aging

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1POI

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	AMMONIUM SULFATE, 2-(N-MORPHOLINO)-ETHANESULFONIC ACID, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.9	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 154.495	α = 90
b = 154.495	β = 90
c = 127.29	γ = 90

Symmetry
Space Group	I 4 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV		2003-12-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E SUPERBRIGHT	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.198	50	96.3	0.063	27.9	7.8		37851

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.198	2.28	100		0.401	4.6	7.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1POI	2.198	40	33683	1806	90.27	0.19551	0.19305	0.24216	RANDOM	45.803

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]
-1.3			-1.3		2.59

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.928
r_dihedral_angle_3_deg	17.094
r_dihedral_angle_4_deg	14.606
r_dihedral_angle_1_deg	6.35
r_scangle_it	3.831
r_scbond_it	2.654
r_mcangle_it	1.702
r_angle_refined_deg	1.6
r_mcbond_it	1.235
r_nbtor_refined	0.315
r_nbd_refined	0.215
r_symmetry_vdw_refined	0.214
r_symmetry_hbond_refined	0.184
r_xyhbond_nbd_refined	0.158
r_chiral_restr	0.109
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4180
Nucleic Acid Atoms
Solvent Atoms	255
Heterogen Atoms	156

Software

Software
Software Name	Purpose
HKL-2000	data reduction
AMoRE	phasing
REFMAC	refinement
HKL-2000	data scaling