2XEH

Structural Determinants for Improved Thermal Stability of Designed Ankyrin Repeat Proteins With a Redesigned C-capping Module.

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 128.905	α = 90
b = 128.905	β = 90
c = 50.696	γ = 120

Symmetry
Space Group	P 61

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA		SLS	X06SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.8	50	99.4	0.07		6.3		44196			25.33

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	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	Mean Isotropic B
X-RAY DIFFRACTION	OTHER	NONE	1.81	42.194	2	44196	441	99.6	0.2172	0.2168	0.2497

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]
4.6306			4.6306		-9.692

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.61
f_angle_d	0.803
f_chiral_restr	0.049
f_bond_d	0.004
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3558
Nucleic Acid Atoms
Solvent Atoms	257
Heterogen Atoms	45

Software

Software
Software Name	Purpose
PHENIX	refinement