5YTH

Structure of large fragment of DNA Polymerase I from Thermus aquaticus Host-Guest complex with the unnatural base M-fC pair with dG

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	EVAPORATION	7	293.15	0.05 M sodium cacodylate (pH 7.0), 0.2 M ammonium acetate, 0.01 M magnesium acetate, 30% PEG 8000

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 109.273	α = 90
b = 109.273	β = 90
c = 91.119	γ = 120

Symmetry
Space Group	P 31 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		2017-07-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL19U1	0.9793	SSRF	BL19U1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.53	94.63	99.9	18.76	6.8		20264

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	2.53	2.57

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	4DFK	2.53	94.63	20264	1059	99.77	0.20724	0.20369	0.27457	RANDOM	59.834

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]
0.66	0.33		0.66		-2.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.141
r_dihedral_angle_4_deg	17.884
r_dihedral_angle_3_deg	17.519
r_dihedral_angle_1_deg	7.883
r_long_range_B_refined	1.737
r_long_range_B_other	1.736
r_angle_refined_deg	1.309
r_angle_other_deg	0.981
r_mcangle_it	0.801
r_mcangle_other	0.801
r_scangle_other	0.799
r_mcbond_it	0.462
r_mcbond_other	0.462
r_scbond_it	0.453
r_scbond_other	0.453
r_chiral_restr	0.068
r_gen_planes_refined	0.008
r_bond_refined_d	0.007
r_bond_other_d	0.002
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	4266
Nucleic Acid Atoms	573
Solvent Atoms	75
Heterogen Atoms	39

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-3000	data reduction
SCALEPACK	data scaling
PHASER	phasing