3V4P

crystal structure of a4b7 headpiece complexed with Fab ACT-1


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8.52770.1 M Tris, 0.1 M NaCl, 8-10% PEG 20,000, VAPOR DIFFUSION, HANGING DROP, temperature 277K, pH 8.5
Crystal Properties
Matthews coefficientSolvent content
3.5865.68

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 137.78α = 90
b = 122.74β = 115.38
c = 158.14γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 300 mm CCD2008-12-06MSINGLE WAVELENGTH
21x-ray100MSINGLE WAVELENGTH
31x-ray100MMAD
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 23-ID-D1.00695APS23-ID-D
2SYNCHROTRONAPS BEAMLINE 23-ID-D0.97945APS23-ID-D
3SYNCHROTRONAPS BEAMLINE 23-ID-D0.97945,0.97960,0.94957APS23-ID-D

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
1,2,33.155099.30.0890.08910.33.788207922
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)
1,2,33.153.2991000.9150.9151.9

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONSAD3.1546.131.9982057106799.460.22040.21990.2514
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]
-32.80933.9672-16.651-11.7665
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d11.651
f_angle_d0.689
f_chiral_restr0.047
f_bond_d0.003
f_plane_restr0.003
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms21380
Nucleic Acid Atoms
Solvent Atoms21
Heterogen Atoms298

Software

Software
Software NamePurpose
HKL-2000data collection
SHARPphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling