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Single-chain chimeric protein mimicking the interaction between HR1 and HR2 in HIV gp41 (pH 6.5)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6R2G
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 6.5 288 0.2M ammonium sulfate, 0.1M
MES, 30% PEG 8000
Crystal Properties Matthews coefficient Solvent content 2.84 56.75
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 53.755 α = 90 b = 79.713 β = 94.2 c = 62.9 γ = 90
Symmetry Space Group C 1 2 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 PIXEL DECTRIS PILATUS 6M 2025-03-14 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ALBA BEAMLINE XALOC 0.98 ALBA XALOC
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) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot 1 1.5 19.93 99.1 0.047 0.066 0.046 0.993 8.1 2.8 41887 22.63
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) Redundancy Number Unique Reflections (All) 1 1.5 1.53 98.8 0.509 0.705 0.487 0.94 1.2 2.7
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (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 DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 1.5 19.93 1.41 41833 2127 99.01 0.1822 0.1806 0.1806 0.2123 0.2123 40.17
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 Key Refinement Restraint Deviation f_dihedral_angle_d 16.5129 f_angle_d 0.8983 f_chiral_restr 0.0382 f_plane_restr 0.0257 f_bond_d 0.0066
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1575 Nucleic Acid Atoms Solvent Atoms 143 Heterogen Atoms 15
Software Software Software Name Purpose PHENIX refinement XDS data reduction Aimless data scaling PHASER phasing