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The structure of a deoxygenated 400 kda hemoglobin provides a more accurate description of the cooperative mechanism of giant hemoglobins: CA bound form
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3WCT
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7.5 293 13-18% PEG 3350, 0-5mM Ca acetate/Mg acetate, 100mM HEPES-NaOH, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.57 52.09
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 108.944 α = 90 b = 108.944 β = 90 c = 195.016 γ = 120
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 90 CCD RAYONIX MX225HE 2009-10-12 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SPRING-8 BEAMLINE BL41XU 1.0000 SPring-8 BL41XU
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Sym I (Observed) 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 2.6 50 99.9 0.065 22.9 5.7 40209 40209 -3 54.8
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.6 2.69 100 0.337 5.1 5.6 3997
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) 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) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION FOURIER SYNTHESIS THROUGHOUT 3WCT 2.6 36.33 40167 2037 99.8 0.235 0.235 0.2283 0.267 0.2568 RANDOM 61.7216
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] -4.38 -4.38 8.76
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 18.2 c_scangle_it 3.18 c_mcangle_it 2.74 c_scbond_it 2.07 c_mcbond_it 1.56 c_angle_deg 1.3 c_improper_angle_d 0.87 c_bond_d 0.01
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 9117 Nucleic Acid Atoms Solvent Atoms 59 Heterogen Atoms 508
Software Software Software Name Purpose BSS data collection CNS refinement HKL-2000 data reduction HKL-2000 data scaling CNS phasing