4QE9

Open MthK pore structure soaked in 10 mM Ba2+/100 mM K+

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	298	3.0-3.5M 1,6-Hexandiol, 100mM HEPES, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.19

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.005	α = 90
b = 61.005	β = 90
c = 44.95	γ = 90

Symmetry
Space Group	P 4 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	CCD	ADSC QUANTUM 4		2013-06-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL17U	0.9786	SSRF	BL17U

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.15	50	98.4	0.105	26.6	10.5		4888		2

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	PDB ENTRY 3LDC	2.15	30.5	4389	478	100	0.20392	0.1981	0.2	0.25673	0.26	RANDOM	51.793

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]
-0.69			-0.69		1.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	23.916
r_dihedral_angle_3_deg	14.11
r_dihedral_angle_4_deg	10.26
r_dihedral_angle_1_deg	4.596
r_scangle_it	2.188
r_scbond_it	1.399
r_angle_refined_deg	1.149
r_mcangle_it	0.984
r_mcbond_it	0.523
r_symmetry_vdw_refined	0.451
r_nbtor_refined	0.315
r_nbd_refined	0.225
r_xyhbond_nbd_refined	0.144
r_symmetry_hbond_refined	0.138
r_chiral_restr	0.078
r_bond_refined_d	0.01
r_gen_planes_refined	0.004
r_metal_ion_refined	0.001
r_symmetry_metal_ion_refined	0.001
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	648
Nucleic Acid Atoms
Solvent Atoms	43
Heterogen Atoms	6

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASES	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling