Experiment: 6TK7

Femtosecond to millisecond structural changes in a light-driven sodium pump: Dark structure in acidic conditions

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3X3C

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	LIPIDIC CUBIC PHASE		293	200 mM Sodium Acetate pH 4.4, 150 mM MgCl2, 35% PEG 200

Crystal Properties
Matthews coefficient	Solvent content
3.14	60.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.54	α = 90
b = 84.48	β = 90
c = 235.56	γ = 90

Symmetry
Space Group	I 2 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	293	PIXEL	PSI JUNGFRAU 16M		2019-02-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	FREE ELECTRON LASER	SwissFEL ARAMIS BEAMLINE ESA	1.0	SwissFEL ARAMIS	ESA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	CC (Half)	R Split (All)	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	1.6	12.4	52.3	1	0.068	8.3	505		28904			25.82

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	R Split (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.6	2.3	27.7		0.9	0.383	2.2

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	3x3c	1.6	12.357	1.34	28895	1892	52.33	0.1798	0.1775	0.177	0.2134	0.2137	36.1577

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2128
Nucleic Acid Atoms
Solvent Atoms	99
Heterogen Atoms	242

Software

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