Experiment: 1UW6

X-ray structure of acetylcholine binding protein (AChBP) in complex with nicotine

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1I9B	PDB ENTRY 1I9B

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		TRIS PH 8.0, AMMONIUM SULFATE

Crystal Properties
Matthews coefficient	Solvent content
2.5	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 233	α = 90
b = 267.422	β = 90
c = 73.139	γ = 90

Symmetry
Space Group	P 21 21 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	CCD	ADSC CCD		2002-06-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4		ESRF	ID14-4

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	2.2	50	86	0.094	9	2.9		236373		1.7

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	2.2	2.28	38		0.589	1.7	1.89

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 (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1I9B	2.2	12	184182	9739	84.15	0.22386	0.22164	0.26533	RANDOM	21.888

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]
0.46			0.46		-0.92

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	33079
Nucleic Acid Atoms
Solvent Atoms	1469
Heterogen Atoms	240

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALEPACK	data scaling
AMoRE	phasing