4H8F

Crystal structure of a parallel 4-helix coiled coil CC-Hex-II- 22

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	291	25 % tert-butanol and 100 mM Tris pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
3.67	66.52

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.67	α = 90
b = 46.67	β = 90
c = 94.06	γ = 90

Symmetry
Space Group	P 41 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		PIXEL	PSI PILATUS 6M		2011-08-22	M	SINGLE WAVELENGTH
2	1	x-ray		PIXEL	PSI PILATUS 6M		2011-08-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I24	0.97	Diamond	I24
2	SYNCHROTRON	DIAMOND BEAMLINE I24	1.7	Diamond	I24

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.88	46.7				9046	8847

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	PDB ENTRY 3R46	1.88	46.67	8847	8372	422	97.57	0.20878	0.2072	0.24324	RANDOM	32.497

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]
0.59			0.59		-1.19

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	43.322
r_dihedral_angle_3_deg	14.552
r_scangle_it	8.72
r_scbond_it	5.127
r_dihedral_angle_1_deg	5.061
r_mcangle_it	2.811
r_mcbond_it	1.767
r_angle_refined_deg	1.241
r_chiral_restr	0.102
r_bond_refined_d	0.014
r_gen_planes_refined	0.013
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_4_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	478
Nucleic Acid Atoms
Solvent Atoms	72
Heterogen Atoms	21

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement