2XRA

crystal structure of the HK20 Fab in complex with a gp41 mimetic 5- Helix


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.50.1 M HEPES PH 7.5, 0.2 M AMMONIUM SULPHATE, 25% PEG 3350 (W/V)
Crystal Properties
Matthews coefficientSolvent content
2.5652.05

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 75.947α = 90
b = 62.71β = 97.7
c = 76.61γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC CCDMSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID23-2ESRFID23-2

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
12.33793.30.1243.22825432
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)
12.32.4289.20.352.12.4

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 2CMR2.337.6328253150993.160.239130.236930.27943RANDOM35.977
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]
0.25-0.20.06-0.36
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg37.443
r_dihedral_angle_4_deg15.243
r_dihedral_angle_3_deg15.175
r_dihedral_angle_1_deg5.42
r_scangle_it2.898
r_scbond_it1.649
r_mcangle_it1.19
r_angle_refined_deg1.183
r_mcbond_it0.622
r_chiral_restr0.074
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg37.443
r_dihedral_angle_4_deg15.243
r_dihedral_angle_3_deg15.175
r_dihedral_angle_1_deg5.42
r_scangle_it2.898
r_scbond_it1.649
r_mcangle_it1.19
r_angle_refined_deg1.183
r_mcbond_it0.622
r_chiral_restr0.074
r_bond_refined_d0.009
r_gen_planes_refined0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4962
Nucleic Acid Atoms
Solvent Atoms118
Heterogen Atoms

Software

Software
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing