2O6N

RH4B: designed right-handed coiled coil tetramer with all biological amino acids

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.2	298	10% PEG 4000, 0.1M ammonium sulfate, 0.15M sodium acetate, 10mM ytterbium(II) chloride, pH 5.2, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.31	46.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 38.356	α = 90
b = 38.356	β = 90
c = 49.679	γ = 90

Symmetry
Space Group	P 4 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	100	IMAGE PLATE			2000-02-28	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	1.000,1.2398,1.3858,1.3864	SSRL	BL9-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (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	30.36	99.7	0.083	0.074	21.09	8	20717	20631	2	2	8.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1	1.05	99.7		0.011	0.85	1.26	4.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	MAD	THROUGHOUT	1.1	30.36	2	14797	791	99.4	0.116	0.115	0.132	RANDOM	11.46

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]
0.23			0.23		-0.47

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	23.362
r_dihedral_angle_3_deg	12.189
r_sphericity_free	11.464
r_scangle_it	5.68
r_scbond_it	4.618
r_sphericity_bonded	4.175
r_dihedral_angle_1_deg	4.014
r_mcangle_it	2.033
r_mcbond_it	1.991
r_rigid_bond_restr	1.675
r_angle_refined_deg	1.298
r_angle_other_deg	0.729
r_mcbond_other	0.725
r_nbd_refined	0.328
r_symmetry_vdw_refined	0.302
r_xyhbond_nbd_refined	0.244
r_symmetry_hbond_refined	0.243
r_symmetry_vdw_other	0.225
r_nbtor_refined	0.178
r_nbd_other	0.175
r_symmetry_metal_ion_refined	0.167
r_chiral_restr	0.084
r_nbtor_other	0.083
r_metal_ion_refined	0.079
r_bond_refined_d	0.011
r_gen_planes_refined	0.006
r_gen_planes_other	0.003
r_bond_other_d	0.001
r_dihedral_angle_4_deg
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	274
Nucleic Acid Atoms
Solvent Atoms	119
Heterogen Atoms	1

Software

Software
Software Name	Purpose
REFMAC	refinement
Blu-Ice	data collection
MOSFLM	data reduction
SCALA	data scaling
SOLVE	phasing