Experiment: 4H8O

Crystal structure of a parallel 6-helix coiled coil CC-Hex-N24

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3R46	PDB ENTRY 3R46

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	291	3% D-sorbitol, 20 mM sodium formate, 20 mM ammonium acetate, 20 mM trisodium citrate, 20 mM sodium potassium L-tartrate, 20 mM sodium oxamate; 100 mM MES/imidazole pH 6.5; and 10 % PEG 20K, 20 % PEG MME 550, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.64	53.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.88	α = 90
b = 111.05	β = 90
c = 35.98	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		PIXEL	DECTRIS PILATUS 2M			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04-1	0.97	Diamond	I04-1

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	1.598	50.9				27793	27487

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 3R46	1.598	46.256	1.04	50632	50075	2501	95.95	0.2164	0.2147	0.2493	0.292

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]
-1.7934			1.0109		0.7824

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.56
f_angle_d	1.465
f_chiral_restr	0.094
f_bond_d	0.016
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1362
Nucleic Acid Atoms
Solvent Atoms	219
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement