2C4H

Torpedo californica acetylcholinesterase in complex with 500mM acetylthiocholine

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1EA5	PDB ENTRY 1EA5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6	277	32% PEG200, 150MM MES, PH6, 4 DEG. C. THE CRYSTAL WAS SOAKED IN A 1.5ML MOTHER LIQUOR SOLUTION CONTAINING 500MM OF THE SUBSTRATE ACETYLTHIOCHOLINE, 40 MINUTES PRIOR TO DATA COLLECTION, pH 6.00

Crystal Properties
Matthews coefficient	Solvent content
3.8	68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 111.99	α = 90
b = 111.99	β = 90
c = 137.12	γ = 120

Symmetry
Space Group	P 31 2 1

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 CCD		2005-04-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29		ESRF	ID29

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	2.15	20	99.6	0.06	22.14	7.34		54312		3	27.9

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	2.15	2.2	98.9		0.45	3.1	4.9

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	PDB ENTRY 1EA5	2.15	19.8	54244	2718	99.5	0.169	0.169	0.209	RANDOM	41.2

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]
6.52	3.21		6.52		-13.04

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.8
c_scangle_it	2.84
c_mcangle_it	2.02
c_scbond_it	2
c_angle_deg	1.3
c_mcbond_it	1.3
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4245
Nucleic Acid Atoms
Solvent Atoms	948
Heterogen Atoms	86

Software

Software
Software Name	Purpose
CNS	refinement
XDS	data reduction
XSCALE	data scaling
CNS	phasing