Experiment: 1SKO

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	9	293	14% PEG 3350, 0.1M Tris-HCl buffer, pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.38	47.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.974	α = 90
b = 64.193	β = 90
c = 73.28	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 4		2003-11-22	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 4		2003-11-22	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X8C	1.1000	NSLS	X8C
2	SYNCHROTRON	NSLS BEAMLINE X8C	0.979267, 0.979553, 0.964318	NSLS	X8C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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
1,2	2	50	99.6	0.07	12.4		16750	16750	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	2.07	100

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	MAD	THROUGHOUT	2	48.22	16750	15937	854	99.92	0.20472	0.20472	0.20106	0.27087	RANDOM	38.889

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]
1.66			-0.04		-1.62

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	8.466
r_scangle_it	4.72
r_scbond_it	3.086
r_mcangle_it	2.12
r_angle_refined_deg	1.923
r_mcbond_it	1.191
r_symmetry_hbond_refined	0.287
r_nbd_refined	0.25
r_symmetry_vdw_refined	0.243
r_xyhbond_nbd_refined	0.202

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	8.466
r_scangle_it	4.72
r_scbond_it	3.086
r_mcangle_it	2.12
r_angle_refined_deg	1.923
r_mcbond_it	1.191
r_symmetry_hbond_refined	0.287
r_nbd_refined	0.25
r_symmetry_vdw_refined	0.243
r_xyhbond_nbd_refined	0.202
r_chiral_restr	0.137
r_bond_refined_d	0.022
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1802
Nucleic Acid Atoms
Solvent Atoms	230
Heterogen Atoms

Software

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.