5MSG

Influenza B polymerase bound to vRNA promoter and capped RNA primer

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4WRT

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4	277	35 microM of FluB polymerase was mixed with 40 microM of the vRNA promoter and 40 microM 13-mer capped RNA primer in a buffer containing 500 mM NaCl, 50 mM HEPES pH 7.5, 5% glycerol and 2 mM TCEP. The best diffracting crystals appeared in 100 mM sodium acetate pH 3.8 - 4.0 and 150 mM di-ammonium phosphate

Crystal Properties
Matthews coefficient	Solvent content
5.32	76.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 200.41	α = 90
b = 200.41	β = 90
c = 254.61	γ = 120

Symmetry
Space Group	P 32 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	PIXEL	DECTRIS PILATUS 6M-F		2015-10-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	1.2724	ESRF	ID23-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	3.8	173.56	99.9	0.411	0.999	9.76	46.4		58685

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.8	4	100		2.743	0.72	1.2	4.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	MOLECULAR REPLACEMENT	THROUGHOUT	4WRT	3.8	173.56	55900	2785	99.9	0.23631	0.23471	0.26745	RANDOM	172.682

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]
-6.58	-3.29		-6.58		21.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.493
r_dihedral_angle_3_deg	14.967
r_dihedral_angle_4_deg	12.178
r_long_range_B_refined	8.172
r_long_range_B_other	8.172
r_mcangle_other	5.213
r_mcangle_it	5.212
r_dihedral_angle_1_deg	5.121
r_scangle_other	4.389
r_mcbond_it	3.002
r_mcbond_other	2.997
r_scbond_it	2.373
r_scbond_other	2.373
r_angle_refined_deg	0.996
r_angle_other_deg	0.869
r_chiral_restr	0.054
r_bond_refined_d	0.007
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001
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_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	17457
Nucleic Acid Atoms	769
Solvent Atoms
Heterogen Atoms	10

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
PHASER	phasing