6Q5K

Crystal structure of a CC-Hex mutant that forms an antiparallel four-helix coiled coil CC-Hex*-L24K

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	297	0.05 M Tris, 0.75 M ammonium sulfate

Crystal Properties
Matthews coefficient	Solvent content
1.89	34.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 69.28	α = 90
b = 69.28	β = 90
c = 35.441	γ = 120

Symmetry
Space Group	P 61 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	80	PIXEL	DECTRIS PILATUS 2M		2013-04-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04-1	0.92	Diamond	I04-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	1.65	24.78	96.5	0.071	0.073	0.018	17.6	20.4		6134			14.9

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.65	1.68	100		1.356	1.393	0.316	0.682	2.7	18.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	1.65	24.78	5821	313	95.77	0.17395	0.17174	0.21834	RANDOM	32.017

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]
0.4	0.2		0.4		-1.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.145
r_dihedral_angle_3_deg	16.39
r_long_range_B_refined	6.417
r_long_range_B_other	6.411
r_dihedral_angle_1_deg	4.409
r_scangle_other	3.73
r_mcangle_it	3.384
r_mcangle_other	3.383
r_scbond_it	2.454
r_scbond_other	2.45
r_mcbond_it	2.071
r_mcbond_other	2.064
r_angle_refined_deg	1.856
r_angle_other_deg	1.518
r_chiral_restr	0.095
r_bond_refined_d	0.013
r_gen_planes_refined	0.008
r_gen_planes_other	0.003
r_bond_other_d	0.002
r_dihedral_angle_4_deg
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_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	400
Nucleic Acid Atoms
Solvent Atoms	32
Heterogen Atoms	13

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
Aimless	data scaling
PHASER	phasing