7ADI

KirBac3.1 W46R: role of a highly conserved tryptophan at the membrane-water interface of Kir channel

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1XL6

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.5	291	15% (w/v) PEG- MME 5k, 15% (v/v) glycerol, 1M Lithium Chloride, and 100 mM MES pH 6.5

Crystal Properties
Matthews coefficient	Solvent content
4.02	69.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 106.77	α = 90
b = 113.98	β = 90
c = 89.18	γ = 90

Symmetry
Space Group	P 21 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	100	PIXEL	DECTRIS PILATUS 6M		2013-04-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SOLEIL BEAMLINE PROXIMA 1	1.07114	SOLEIL	PROXIMA 1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (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	48.34	99.6	0.06	0.0558	1	19.67	7.1		189833

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.83	3	98.1		1.551	1.44	0.659	1.31

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	1XL6	2.8	48.02	26051	1372	99.68	0.225	0.2218	0.22	0.2873	0.28	RANDOM	97.464

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]
0.23			-1.09		0.86

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.679
r_dihedral_angle_3_deg	20.382
r_dihedral_angle_4_deg	18.93
r_dihedral_angle_1_deg	8.345
r_angle_refined_deg	1.594
r_angle_other_deg	1.206
r_chiral_restr	0.064
r_bond_refined_d	0.008
r_gen_planes_refined	0.006
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4246
Nucleic Acid Atoms
Solvent Atoms	23
Heterogen Atoms	4

Software

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