2WLI | pdb_00002wli

POTASSIUM CHANNEL FROM MAGNETOSPIRILLUM MAGNETOTACTICUM

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1XL4	PDB ENTRY 1XL4

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5		PRECIPITANT: 15 % PEG 400 2.5 % PEG 4000 2.5 % PEG 8000 10 % GLYCEROL 90 MM HEPES PH 7.5 PROTEIN: 8MG/ML KIRBAC3.1 150MM KCL 20MM TRIS8.0 0.05% TDM 4MM LDAO PROTEIN AND PRECIPITANT WERE COMBINED IN A 1:1 RATIO AND EQUILIBRATED AGAINST A RESERVOIR OF PRECIPITANT IN A SITTING-DROP VAPOUR-DIFFUSION SET-UP.

Crystal Properties
Matthews coefficient	Solvent content
4.44	72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 113.409	α = 90
b = 105.009	β = 90
c = 89.422	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	CCD	ADSC CCD	MIRRORS	2008-05-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX1		Australian Synchrotron	MX1

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	3.1	50	100	0.13	16.6	7.9		20089		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.1	3.21	100		0.64	3.5	8.1

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 1XL4	3.09	15	18847	998	100	0.26655	0.26538	0.26	0.28767	0.29	SHELLS	32.917

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]
2.87			1.02		-3.89

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	25.641
r_dihedral_angle_4_deg	23.096
r_dihedral_angle_3_deg	18.349
r_dihedral_angle_1_deg	5.614
r_angle_other_deg	3.098
r_angle_refined_deg	1.339
r_chiral_restr	0.079
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_gen_planes_other	0.004
r_bond_other_d
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
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	4261
Nucleic Acid Atoms
Solvent Atoms	2
Heterogen Atoms	4

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing