1W75

Native Orthorhombic form of Torpedo californica acetylcholinesterase (AChE)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				PROTEIN IN 100MM NACL, 0.01%NAN3, 1MM MES PH6.5, MIXED 1/1 WITH SOLUBILIZED LI5 (PW11O39RHCH2COOH), 3 MICROLITER OF THIS MIXTURE WAS MIXED WITH 3 MICROLITER OF 40% PEG200 IN 0.5M MES PH5.8, SUSPENDED OVER WELL WITH 36%PEG200 IN 0.5M MES, PH 5.8

Crystal Properties
Matthews coefficient	Solvent content
3.1	59.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 91.502	α = 90
b = 106.586	β = 90
c = 150.343	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	120	IMAGE PLATE	RIGAKU IMAGE PLATE	OSMIC BLUE	2003-08-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH3R

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.4	40	94.3	0.06	13	2.6		55093		-3	42

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.49	88.3		0.27	4	2.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	OTHER	THROUGHOUT	2.4	40	52293	2715	94.5	0.206	0.204	0.247	RANDOM	32.87

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]
-2.419			6.404		-3.985

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.675
r_scangle_it	3.385
r_scbond_it	2.135
r_angle_refined_deg	1.562
r_mcangle_it	1.34
r_mcbond_it	0.694
r_nbtor_refined	0.317
r_symmetry_hbond_refined	0.276
r_nbd_refined	0.221
r_symmetry_vdw_refined	0.2
r_xyhbond_nbd_refined	0.128
r_chiral_restr	0.118
r_bond_refined_d	0.015
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_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_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 Atoms	Number
Protein Atoms	8369
Nucleic Acid Atoms
Solvent Atoms	252
Heterogen Atoms	56

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling