9NWU | pdb_00009nwu

Crystal structure of a high affinity VL-VH tetrabody for the erythropoietin receptor


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 6VUIFv (Hv+Lv) of an early model of this structure

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP9.529520% PEG8000, 100 mM CHES pH 9.5, with microseeding. Crystals cryoprotected with the same crystallization liquor plus 25% ethylene glycol
Crystal Properties
Matthews coefficientSolvent content
2.550.77

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 57.355α = 90
b = 141.779β = 90.76
c = 60.651γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS EIGER2 X 16Mmirrors2022-11-04MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 24-ID-E0.97918APS24-ID-E

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)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
11.96141.7894.90.050.060.0320.99814.93.36568636.1
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.962.0171.30.7160.9470.610.4441.32.3

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-Work (Depositor)R-Work (DCC)R-Free (Depositor)R-Free (DCC)Mean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE1.9670.891.3665633335494.740.16910.16660.16710.21520.215841.23
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]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d8.9937
f_angle_d0.9776
f_chiral_restr0.0602
f_plane_restr0.0087
f_bond_d0.0076
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6808
Nucleic Acid Atoms
Solvent Atoms586
Heterogen Atoms66

Software

Software
Software NamePurpose
PHENIXrefinement
autoPROCdata reduction
Aimlessdata scaling
PHASERphasing