6RF4

Crystal structure of the potassium-pumping S254A mutant of the light-driven sodium pump KR2 in the pentameric form, pH 8.0

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6REW

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	LIPIDIC CUBIC PHASE		293	3.4 M Sodium Malonate pH 8.0

Crystal Properties
Matthews coefficient	Solvent content
3.43	64.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 131.396	α = 90
b = 240.045	β = 90
c = 135.14	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M		2017-12-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID30B	1.000	ESRF	ID30B

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	2.4	48.05	99.9	0.119	0.134	0.06	0.998	9.1	4.7		83365

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	2.4	2.45	99.9		1.481	1.662	0.742	0.521		4.7

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	6REW	2.4	44.91	79117	4222	99.76	0.1827	0.1812	0.2122	RANDOM	53.641

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]
4.41			-4.81		0.41

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.296
r_dihedral_angle_4_deg	21.761
r_dihedral_angle_3_deg	16.373
r_dihedral_angle_1_deg	7.289
r_angle_other_deg	0.77
r_angle_refined_deg	0.628
r_chiral_restr	0.036
r_bond_refined_d	0.003
r_gen_planes_refined	0.002
r_bond_other_d	0.001

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.296
r_dihedral_angle_4_deg	21.761
r_dihedral_angle_3_deg	16.373
r_dihedral_angle_1_deg	7.289
r_angle_other_deg	0.77
r_angle_refined_deg	0.628
r_chiral_restr	0.036
r_bond_refined_d	0.003
r_gen_planes_refined	0.002
r_bond_other_d	0.001
r_gen_planes_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10937
Nucleic Acid Atoms
Solvent Atoms	328
Heterogen Atoms	899

Software

Software
Software Name	Purpose
Aimless	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
MOLREP	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.