2NZ0

Crystal structure of potassium channel Kv4.3 in complex with its regulatory subunit KChIP1

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	10.5	296	2.0 M NaH2PO4/K2HPO4, 0.2 M Li2SO4 and 0.1 M CAPS, pH 10.5, VAPOR DIFFUSION, HANGING DROP, temperature 296.0K

Crystal Properties
Matthews coefficient	Solvent content
2.91	57.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 112.186	α = 90
b = 112.213	β = 90
c = 141.051	γ = 90

Symmetry
Space Group	I 2 2 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	IMAGE PLATE	MAR scanner 345 mm plate		2005-11-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1		CHESS	F1

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	3.2	99	97.4	0.062	0.062	10.8	5.9	15065	14680	2	1

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	3.2	3.31	98		0.146	0.489	1.8	6

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	MOLECULAR REPLACEMENT	THROUGHOUT	3.2	30	13547	13587	1114	97.92	0.26458	0.26082	0.31015	RANDOM	124.965

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]
3.39			2.39		-5.77

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.018
r_dihedral_angle_3_deg	15.786
r_dihedral_angle_4_deg	12.416
r_dihedral_angle_1_deg	3.799
r_scangle_it	1.397
r_angle_refined_deg	0.879
r_scbond_it	0.822
r_mcangle_it	0.791
r_mcbond_it	0.443
r_symmetry_vdw_refined	0.357
r_symmetry_hbond_refined	0.33
r_nbtor_refined	0.303
r_nbd_refined	0.174
r_xyhbond_nbd_refined	0.112
r_chiral_restr	0.06
r_bond_refined_d	0.007
r_gen_planes_refined	0.002
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_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5078
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	6

Software

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