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Crystal structure of [Fe]-hydrogenase (Hmd) holoenzyme from Methanococcus aeolicus (open form)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4JJF
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 4 281.15 The reconstituted [Fe]-hydrogenase holoenzyme from M. aeolicus was crystallized in the anaerobic tent with gas phase 95%N2/5%H2 using 96-well 2-drop MRC Crystallization Plates (Molecular Dimensions, Suffolk, UK). For the initial screening, 0.7-ul of 24 mg/ml reconstituted [Fe]-hydrogenase was mixed with 0.7 ul of reservoir solution of crystallization kits under yellow light and incubated under the dark condition. The best diffracting crystal was obtained in one month in the crystallization reservoir solution containing 20% w/v polyethylene glycol 3350, 100-mM tri-sodium citrate pH 4.0 and 200-mM tri-sodium citrate.
Crystal Properties Matthews coefficient Solvent content 3.74 67.17
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 136.985 α = 90 b = 136.985 β = 90 c = 117.317 γ = 90
Symmetry Space Group I 41 2 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 CCD ADSC QUANTUM 315r 2016-09-26 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE BM30A 0.97980 ESRF BM30A
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 2.3 48.43 100 0.155 0.161 0.043 0.999 17.9 13.7 25078 39.33
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 2.3 2.42 100 1.023 1.061 0.281 0.602 2.9 14
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 MOLECULAR REPLACEMENT THROUGHOUT 4JJF 2.3 26.62 25043 1229 100 0.172 0.171 0.1784 0.192 0.2001 RANDOM 43.63
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] 2.5933 2.5933 -5.1866
RMS Deviations Key Refinement Restraint Deviation t_other_torsion 13.75 t_omega_torsion 2.27 t_angle_deg 1.11 t_bond_d 0.009 t_dihedral_angle_d t_incorr_chiral_ct t_pseud_angle t_trig_c_planes t_gen_planes t_it
RMS Deviations Key Refinement Restraint Deviation t_other_torsion 13.75 t_omega_torsion 2.27 t_angle_deg 1.11 t_bond_d 0.009 t_dihedral_angle_d t_incorr_chiral_ct t_pseud_angle t_trig_c_planes t_gen_planes t_it t_nbd t_improper_torsion t_chiral_improper_torsion t_sum_occupancies t_utility_distance t_utility_angle t_utility_torsion t_ideal_dist_contact
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2567 Nucleic Acid Atoms Solvent Atoms 107 Heterogen Atoms 66
Software Software Software Name Purpose BUSTER refinement XDS data reduction SCALA data scaling PHASER phasing