3EXC | pdb_00003exc

Structure of the RNA'se SSO8090 from Sulfolobus solfataricus

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	295	2 M ammonium sulfate, 0.1 M Hepes 7.5, 1% PEG550 MME plus 0.015 mg/ml chymotrypsin. Cryoprotected in 20% ethylene glycol, VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.85	56.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.479	α = 90
b = 93.479	β = 90
c = 48.596	γ = 120

Symmetry
Space Group	P 63 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 315	MIRRORS	2008-04-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID		APS	19-ID

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	100	99.2	0.08	50	15.8		8834			33.9

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	2.03	88.7		0.757	2.33	9.8

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.25	41.67	6296	291	99.8	0.193	0.191	0.19	0.221	0.23	RANDOM	41.05

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]
-0.01			-0.01		0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	25.177
r_dihedral_angle_4_deg	23.679
r_dihedral_angle_3_deg	21.018
r_dihedral_angle_1_deg	7.503
r_scangle_it	7.34
r_scbond_it	4.561
r_mcangle_it	2.924
r_angle_refined_deg	2.299
r_mcbond_it	1.514
r_nbtor_refined	0.331
r_nbd_refined	0.273
r_symmetry_hbond_refined	0.231
r_symmetry_vdw_refined	0.2
r_xyhbond_nbd_refined	0.18
r_chiral_restr	0.143
r_bond_refined_d	0.027
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	637
Nucleic Acid Atoms
Solvent Atoms	46
Heterogen Atoms	2

Software

Software
Software Name	Purpose
HKL-3000	data collection
SHELXCD	phasing
SHELXE	model building
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling