3RKL

The crystal structure of A81 from Sulfolobus Turreted Icosahedral Virus

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.8	295	18% MPD, 4% tertiary butanol, 0.1 M Na Citrate pH 5.8, 0.2 M ammonium acetate, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2	38.63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.93	α = 90
b = 88.962	β = 123.48
c = 55.346	γ = 90

Symmetry
Space Group	C 1 2 1

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	MARMOSAIC 325 mm CCD	Rh coated flat mirror, toroidal focusing mirror	2006-12-03	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.97927, 0.97913, 0.91162	SSRL	BL9-2

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	1.7	50	97.9	0.04	31.4	4.6	36459	35400	2	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.7	1.74	86.2

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.7	50	34142	33623	1770	98.48	0.16493	0.16333	0.19599	RANDOM	31.944

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]
0.18		0.92	-0.71		1.54

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.994
r_dihedral_angle_3_deg	12.247
r_scangle_it	10.626
r_scbond_it	7.074
r_dihedral_angle_1_deg	4.415
r_mcangle_it	3.423
r_mcbond_it	2.056
r_angle_refined_deg	1.014
r_angle_other_deg	0.81
r_mcbond_other	0.738
r_chiral_restr	0.067
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_dihedral_angle_4_deg
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2620
Nucleic Acid Atoms
Solvent Atoms	157
Heterogen Atoms	8

Software

Software
Software Name	Purpose
Blu-Ice	data collection
SOLVE	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling