3VN0

Crystal Structure of a parallel coiled-coil dimerization domain from the voltage-gated proton channel (mutation/C245S)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	283	0.1M KCL, 0.05M TRIS-HCL PH8.0, 0.1M SODIUM MALONATE, 30% PEG 1000, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 283K

Crystal Properties
Matthews coefficient	Solvent content
1.86	33.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.126	α = 90
b = 53.868	β = 90
c = 81.413	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	90	CCD	RAYONIX MX225HE		2010-05-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL44XU		SPring-8	BL44XU

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	1.37	50	100	0.042	0.042	15	8.3		37843		-3

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	1.37	1.39	99.9		0.484	0.484	4.107	7.1

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	3VMX	1.37	40.71	37776	1931	99.8	0.183	0.181	0.218	RANDOM	20.63

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]
-0.02			-0.3		0.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	43.973
r_dihedral_angle_4_deg	18.481
r_dihedral_angle_3_deg	14.467
r_scangle_it	6.127
r_dihedral_angle_1_deg	3.964
r_scbond_it	3.852
r_mcangle_it	2.484
r_angle_refined_deg	2.445
r_mcbond_it	1.408
r_chiral_restr	0.168
r_bond_refined_d	0.026
r_gen_planes_refined	0.011
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1576
Nucleic Acid Atoms
Solvent Atoms	240
Heterogen Atoms

Software

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