4HW0

Crystal structure of Sso10a-2, a DNA-binding protein from Sulfolobus solfataricus

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	298	Succinic acid, HEPES, PEG MME 2000, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.28	45.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.221	α = 90
b = 69.538	β = 90
c = 80.727	γ = 90

Symmetry
Space Group	P 21 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	100	CCD	ADSC QUANTUM 210		2012-05-08		SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	0.933	ESRF	ID14-1

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	2	40.36	93.28	0.039	39.6302	13.46	21998	21998		6

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.11	95.21		0.48		9.57	3204

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2	40.36	21980	21980	1118	100	0.2065	0.2065	0.2046	0.2449	RANDOM	45.4661

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]
3.38			-0.22		-3.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.683
r_dihedral_angle_4_deg	16.673
r_dihedral_angle_3_deg	16.066
r_dihedral_angle_1_deg	5.292
r_angle_refined_deg	1.714
r_angle_other_deg	1.342
r_chiral_restr	0.097
r_bond_refined_d	0.017
r_bond_other_d	0.008
r_gen_planes_refined	0.008
r_gen_planes_other	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2331
Nucleic Acid Atoms
Solvent Atoms	106
Heterogen Atoms

Software

Software
Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data scaling
XSCALE	data scaling
CRANK	phasing