2AHY

Na+ complex of the NaK Channel

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8	293	PEG 400, NaCl, CaCl2, Tris.HCl, t-butanol, n-Decyl-beta-D-maltopyranoside, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 293 K, pH 8.00

Crystal Properties
Matthews coefficient	Solvent content
4.38	72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.528	α = 90
b = 85.482	β = 90
c = 129.572	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	CCD	ADSC QUANTUM 4		2005-02-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID		APS	19-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.4	19.7	97.6	0.045	0.045	35	5		17824			59.504

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.49	84.1		0.555	0.555	1.8	3.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	SIRAS	THROUGHOUT	2.4	19.7	18069	17645	1734	97.7	0.236	0.236	0.261	RANDOM	73.43

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]
0.603			-0.874		0.271

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	17.47
c_scangle_it	11.047
c_scbond_it	9.206
c_mcangle_it	7.216
c_mcbond_it	5.75
c_angle_deg	1.14
c_improper_angle_d	0.69
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1646
Nucleic Acid Atoms
Solvent Atoms	19
Heterogen Atoms	5

Software

Software
Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
MLPHARE	phasing
CNS	refinement
HKL-2000	data reduction