Experiment: 4H8L

Crystal structure of a parallel 6-helix coiled coil CC-Hex-D24-A5/7C

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	8.5	291	30 mM sodium nitrate, 30 mM disodium hydrogen phosphate, 30 mM ammonium sulfate, 100 mM bicine/Trizma base pH 8.5, 12.5 % PEG 1K, 12.5 % PEG 3350, 12.5 % MPD, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.05	39.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 31.54	α = 90
b = 54.33	β = 90
c = 98.28	γ = 90

Symmetry
Space Group	P 21 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		CCD	ADSC QUANTUM 315			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02	0.97	Diamond	I02

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	1.75	36.4				17439	16619

Refinement

Statistics
Diffraction ID	Structure Solution 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 (Depositor)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 3R46	1.7501	30.031	17110	16306	816	91.97	0.203	0.2004	0.2544	0.2626

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]
-0.4062			-3.0157		3.4219

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	16.997
f_angle_d	1.385
f_chiral_restr	0.101
f_bond_d	0.015
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1196
Nucleic Acid Atoms
Solvent Atoms	110
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement