Structural and electrostatic analysis of a reaction center variant with high-yield charge separation along the alternative electron transfer path


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2J8C 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP295PEG 4000 25%, 10mM Tris pH 7.8, LDAO 0.05%, 280mM NaCl, heptanetriol 5.35%
Crystal Properties
Matthews coefficientSolvent content
4.1870.57

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 142.047α = 90
b = 139.645β = 90
c = 77.443γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray295CCDRAYONIX MX300-HS2022-07-31MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1FREE ELECTRON LASERSACLA BEAMLINE BL31.241SACLABL3

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)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
12.744.8499.770.972.827.24297679.02
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.72.750.14

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-VALUE2.744.841.3341847199697.170.21420.21320.21370.23290.233684.54
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_d15.8379
f_angle_d0.5378
f_chiral_restr0.0378
f_plane_restr0.0037
f_bond_d0.0023
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6514
Nucleic Acid Atoms
Solvent Atoms44
Heterogen Atoms626

Software

Software
Software NamePurpose
PHENIXrefinement
cctbx.xfeldata reduction
DIALSdata scaling
PHENIXphasing