6Q5Q

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

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		298	0.2M potassium/sodium tartrate tetrahydrate 20% w/v PEG 3350.

Crystal Properties
Matthews coefficient	Solvent content
1.74	29.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 28.57	α = 90
b = 29.35	β = 90
c = 55.722	γ = 90

Symmetry
Space Group	I 2 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	CCD	ADSC QUANTUM 315		2010-05-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02	0.9795	Diamond	I02

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	1.08	20.47	99.7	0.074	0.077	0.021	0.999	17.5	12.8		10348

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.08	1.14	94.7		0.706	0.737	0.943	56.2	12.2

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	AB INITIO PHASING	THROUGHOUT	1.08	16.5	9818	497	99.73	0.13531	0.13472	0.14659	RANDOM	14.091

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]
1.31			-0.56		-0.75

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	46.401
r_dihedral_angle_3_deg	9.671
r_rigid_bond_restr	4.184
r_dihedral_angle_1_deg	4.025
r_scangle_other	3.583
r_long_range_B_refined	3.418
r_scbond_it	2.895
r_long_range_B_other	2.88
r_scbond_other	2.863
r_angle_refined_deg	2.222
r_angle_other_deg	1.78
r_mcangle_it	0.987
r_mcangle_other	0.951
r_mcbond_it	0.739
r_mcbond_other	0.678
r_chiral_restr	0.16
r_bond_refined_d	0.021
r_gen_planes_refined	0.013
r_bond_other_d	0.001
r_gen_planes_other	0.001
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_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	238
Nucleic Acid Atoms
Solvent Atoms	34
Heterogen Atoms	10

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
ACORN	phasing