3PF5

Crystal structure of Bs-CspB in complex with rU6

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293.15	protein buffer: 50mM TRIS, 20mM Na-HEPES, pH 7.5; Bs-CspB.rU6 complex concentration: 70mg/ml; crystallization buffer: 31% PEG 3350, 0.25M MgCl2, 0.1M TRIS pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293.15K

Crystal Properties
Matthews coefficient	Solvent content
1.91	35.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.038	α = 90
b = 49.769	β = 90
c = 57.38	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	110	IMAGE PLATE	MAR scanner 345 mm plate	mirrors, slits	2009-02-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

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	1.68	17.5	96.08	0.079	10.48	2.87	15961	15961		-3	25.148

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.68	1.72	93.7		0.545	1.85	2.84	1033

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1CSP	1.68	17.46	15162	15162	798	100	0.18252	0.18252	0.1798	0.23466	RANDOM	16.765

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]
-0.44			1.65		-1.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.33
r_dihedral_angle_4_deg	24.603
r_dihedral_angle_3_deg	10.619
r_dihedral_angle_1_deg	5.846
r_scangle_it	3.465
r_scbond_it	2.603
r_angle_refined_deg	1.459
r_mcangle_it	1.341
r_mcbond_it	1.093
r_angle_other_deg	0.981
r_mcbond_other	0.283
r_symmetry_vdw_other	0.237
r_nbd_refined	0.187
r_nbtor_refined	0.183
r_nbd_other	0.173
r_symmetry_vdw_refined	0.149
r_xyhbond_nbd_refined	0.108
r_symmetry_hbond_refined	0.094
r_nbtor_other	0.086
r_chiral_restr	0.068
r_bond_refined_d	0.016
r_metal_ion_refined	0.009
r_gen_planes_refined	0.006
r_bond_other_d	0.004
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1036
Nucleic Acid Atoms	117
Solvent Atoms	178
Heterogen Atoms	1

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling