6ZHW

Ultrafast Structural Response to Charge Redistribution Within a Photosynthetic Reaction Centre - 1 ps structure

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2I5N

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277	Macrocrystal growth: 10 mg/ml protein, 3.6 M ammonium sulphate, 6 % w/v heptane-1,2,3-triol, 20 mM KH203/K2H03 pH 6.8, 0.1 % LDAO 20 ul sitting drop, 10 protein : 10 precipitant Microcrystals: 8.5 mg/ml protein 18.5 ul sitting drop, 10 protein : 7.5 precipitant : 1 seed stock

Crystal Properties
Matthews coefficient	Solvent content
3.82	67.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 226.5	α = 90
b = 226.5	β = 90
c = 113.9	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	293	PIXEL	CS-PAD CXI-1		2016-06-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	FREE ELECTRON LASER	SLAC LCLS BEAMLINE CXI	1.3	SLAC LCLS	CXI

Serial Crystallography

Sample delivery method
Diffraction ID	Description	Sample Delivery Method
1		injection

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	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	2.8	35.8	100	0.996	12.25	1686		74126			84

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.8	2.83			0.119	0.23

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2I5N	2.8	35.55	1.33	72120	3589	98.65	0.1707	0.1695	0.1925	80.3

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	21.055
f_angle_d	2.0881
f_chiral_restr	0.0633
f_plane_restr	0.0099
f_bond_d	0.0084

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9347
Nucleic Acid Atoms
Solvent Atoms	146
Heterogen Atoms	909

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
PDB_EXTRACT	data extraction
CrystFEL	data reduction
CrystFEL	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.