8QX2

Aplysia californica acetylcholine-binding protein in complex with racemic spiroimine (+)/(-)-4

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2BYN

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	293	10% polyethylene glycol 1500 (w/v), 0.1 M sodium citrate buffer pH 5.5, 24% isopropanol (v/v)

Crystal Properties
Matthews coefficient	Solvent content
2.49	51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.787	α = 90
b = 123.632	β = 90
c = 131.103	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	100	CCD	ADSC QUANTUM 315r		2009-07-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.970800	ESRF	ID23-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	2.1	65.61	99.7	0.109	0.128	0.065	0.993	8.7	3.5		72272

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.1	2.15		100	0.614	0.72	0.369	0.687		3.6

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	MOLECULAR REPLACEMENT	THROUGHOUT	2.1	64.7	70046	2180	99.56	0.17976	0.17881	0.20966	RANDOM	36.68

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]
			-1.78		1.78

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	12.736
r_long_range_B_refined	7.271
r_long_range_B_other	7.239
r_dihedral_angle_1_deg	7.112
r_scangle_other	4.919
r_dihedral_angle_2_deg	4.897
r_mcangle_it	3.236
r_mcangle_other	3.236
r_scbond_it	3.097
r_scbond_other	3.097
r_mcbond_it	2.002
r_mcbond_other	2.001
r_angle_refined_deg	1.263
r_angle_other_deg	0.431
r_chiral_restr	0.06
r_bond_refined_d	0.006
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_dihedral_angle_4_deg
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_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8597
Nucleic Acid Atoms
Solvent Atoms	520
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
MOSFLM	data reduction
PHASER	phasing