1NA3

Design of Stable alpha-Helical Arrays from an Idealized TPR Motif

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	277	Tris, PEG 4000, MgCl2, IPTG, NaCl, pH 8., VAPOR DIFFUSION, HANGING DROP at 277K

Crystal Properties
Matthews coefficient	Solvent content
2	38.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.986	α = 90
b = 54.941	β = 90
c = 66.938	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	1.100	NSLS	X25

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	1.55	34.7	99.9	0.042	0.042	43.3	6.6		22285		-3

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)
	1.55	1.61	100		0.86	0.86	2.5

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	1.55	34.71	22285	2396	100	0.18102	0.17815	0.20731	RANDOM	12.877

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]
0.58			0.31		-0.89

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	4.872
r_dihedral_angle_1_deg	4.712
r_scbond_it	3.055
r_mcangle_it	1.7
r_angle_refined_deg	1.511
r_mcbond_it	0.903
r_angle_other_deg	0.881
r_symmetry_vdw_other	0.28
r_nbd_other	0.238
r_nbd_refined	0.229
r_xyhbond_nbd_refined	0.195
r_symmetry_vdw_refined	0.171
r_chiral_restr	0.122
r_symmetry_hbond_refined	0.095
r_nbtor_other	0.089
r_bond_refined_d	0.017
r_gen_planes_refined	0.011
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_dihedral_angle_2_deg
r_xyhbond_nbd_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1402
Nucleic Acid Atoms
Solvent Atoms	90
Heterogen Atoms	30

Software

Software
Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement
HKL-2000	data reduction