Structure of FabS1CE2_ER-2a in complex with the extracellular region of EGFR


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3QWQchain A (EGFR receptor ectodomain)
experimental modelPDB 8VUCpolypeptide, both chains used for Fab

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP2950.1 M ammonium citrate, 0.1 M bis-tris propane pH 6.5, cryoprotected with this buffer plus 30% ethylene glycol
Crystal Properties
Matthews coefficientSolvent content
3.2862.51

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 66.533α = 114.16
b = 113.846β = 95.24
c = 118.767γ = 104.88
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS EIGER X 9Mmirrors2025-07-18MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS-II BEAMLINE 17-ID-10.919716NSLS-II17-ID-1

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
13.0634.6699.20.2410.2840.1480.9754.43.65511443.7
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)
13.063.2598.91.4681.7210.8910.4090.93.7

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-VALUE3.0634.421.9851632248391.40.21440.21270.21240.24870.248564.34
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_d16.7245
f_angle_d0.6774
f_chiral_restr0.0493
f_plane_restr0.0066
f_bond_d0.0033
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms15593
Nucleic Acid Atoms
Solvent Atoms10
Heterogen Atoms160

Software

Software
Software NamePurpose
PHENIXrefinement
PHENIXrefinement
autoPROCdata reduction
Aimlessdata scaling
PHASERphasing