2NWG

Structure of CXCL12:heparin disaccharide complex


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1Soaking8.5298Grown in 2M Ammonium Sulfate, 0.1M TrisHCl pH 8.50. Soaked in 20 mM PEG-8000, 1M TrisHCl pH 8.5, 16 mM disaccharide. , Soaking, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.3347.26

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 36.492α = 90
b = 56.965β = 90
c = 71.747γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU RAXIS IVMSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU1.5418

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
12.0725.58299.90.0570.05731.96.39627
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)
2.072.181000.3670.36726.51385

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (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 REPLACEMENTTHROUGHOUT2.0723.3495894591000.2410.240.265RANDOM42.461
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]
0.09-0.02-0.07
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.449
r_dihedral_angle_4_deg21.32
r_dihedral_angle_3_deg20.706
r_dihedral_angle_1_deg8.317
r_angle_refined_deg2.519
r_scangle_it2.373
r_mcangle_it2.255
r_scbond_it1.654
r_mcbond_it1.37
r_nbtor_refined0.318
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.449
r_dihedral_angle_4_deg21.32
r_dihedral_angle_3_deg20.706
r_dihedral_angle_1_deg8.317
r_angle_refined_deg2.519
r_scangle_it2.373
r_mcangle_it2.255
r_scbond_it1.654
r_mcbond_it1.37
r_nbtor_refined0.318
r_symmetry_vdw_refined0.261
r_nbd_refined0.257
r_symmetry_hbond_refined0.251
r_xyhbond_nbd_refined0.222
r_chiral_restr0.211
r_bond_refined_d0.025
r_gen_planes_refined0.009
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1087
Nucleic Acid Atoms
Solvent Atoms50
Heterogen Atoms70

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
CrystalCleardata collection
MOSFLMdata reduction
CCP4data scaling