2WYP

Crystal structure of sialic acid binding protein


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2V4CPDB ENTRY 2V4C

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1727730 MG/ML SIAP (IN 20 MM HEPES, 10 MM NACL AND KDN, PH 8.0) AND EQUAL VOLUME OF RESERVOIR SOLUTION (100MM MES PH 6.0, 28.5% PEG 6K, 200MM SODIUM THIOCYANATE), TEMPERATURE 277K
Crystal Properties
Matthews coefficientSolvent content
2.346

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 47.836α = 90
b = 74.489β = 90
c = 88.151γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC CCD2009-07-27MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID14-4ESRFID14-4

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge 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
11.495090.10.1111.86.2464263
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.491.5299.20.43.85.4

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 2V4C1.528.4543885236189.50.1390.1360.1952V4C16.08
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]
0.65-1.761.11
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg39.929
r_dihedral_angle_4_deg16.259
r_dihedral_angle_3_deg12.546
r_scangle_it5.818
r_dihedral_angle_1_deg5.516
r_scbond_it4.037
r_mcangle_it2.524
r_mcbond_it1.706
r_angle_refined_deg1.629
r_rigid_bond_restr1.619
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg39.929
r_dihedral_angle_4_deg16.259
r_dihedral_angle_3_deg12.546
r_scangle_it5.818
r_dihedral_angle_1_deg5.516
r_scbond_it4.037
r_mcangle_it2.524
r_mcbond_it1.706
r_angle_refined_deg1.629
r_rigid_bond_restr1.619
r_angle_other_deg1.01
r_mcbond_other0.565
r_chiral_restr0.112
r_bond_refined_d0.017
r_gen_planes_refined0.009
r_bond_other_d0.002
r_gen_planes_other0.001
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_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2432
Nucleic Acid Atoms
Solvent Atoms405
Heterogen Atoms18

Software

Software
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
REFMACphasing