3SIO

Ac-AChBP ligand binding domain (not including beta 9-10 linker) mutated to human alpha-7 nAChR


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
14.62980.1M Sodium Acetate, 0.02M Calcium Chloride, 30% 2-Methyl-2,4-Pentanediol, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.8156.18

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 143.218α = 90
b = 142.366β = 90.02
c = 144.477γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315r2010-05-08MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 8.2.2ALS8.2.2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.35099.80.1130.11325.0486.8126320-334.55
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.32.3498.70.5520.5522.816.3

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTMODIFIED 2-BYR2.3248.16119855119855607595.90.1840.1820.2339
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]
-1.0095-2.95117.1713-4.5254
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d22.042
f_angle_d1.383
f_chiral_restr0.101
f_bond_d0.009
f_plane_restr0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms17296
Nucleic Acid Atoms
Solvent Atoms832
Heterogen Atoms1054

Software

Software
Software NamePurpose
CCP4model building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
CCP4phasing