1S4U

Crystal Structure analysis of the beta-propeller protein Ski8p

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	293	PEG4000, Sodium citrate, Ethylene glycol, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.16	42.52

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.555	α = 90
b = 66.791	β = 90
c = 81.459	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	MARRESEARCH		2003-07-10	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7A	0.9789, 0.9791, 0.9724	EMBL/DESY, HAMBURG	BW7A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.1	20	0.999			21453	21439	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.1	2.154	0.988

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	2.1	19.96	2	21439	20331	1107	100	0.2529	0.25123	0.28332	RANDOM	31.711

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]
-0.02			0.26		-0.24

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.47
r_scangle_it	1.84
r_mcangle_it	1.154
r_angle_refined_deg	1.06
r_scbond_it	1.057
r_angle_other_deg	0.752
r_mcbond_it	0.616
r_nbd_other	0.229
r_nbd_refined	0.209
r_symmetry_vdw_other	0.201
r_xyhbond_nbd_refined	0.179
r_symmetry_hbond_refined	0.156
r_symmetry_vdw_refined	0.151
r_nbtor_other	0.081
r_chiral_restr	0.067
r_bond_refined_d	0.007
r_gen_planes_refined	0.003
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2816
Nucleic Acid Atoms
Solvent Atoms	158
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
SOLVE	phasing