Experiment: 5FTE

Crystal structure of Pif1 helicase from Bacteroides in complex with ADP-AlF3 and ssDNA

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	5FTB	PDB ENTRY 5FTB

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.1		0.1M HEPES PH 7.1 3.5M SODIUM FORMATE 5% GLYCEROL 0.01M SPERMIDINE

Crystal Properties
Matthews coefficient	Solvent content
3.27	62.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 86.743	α = 90
b = 86.743	β = 90
c = 149.222	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	77	PIXEL	DECTRIS PILATUS 6M		2015-10-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL18U1		SSRF	BL18U1

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	3.19	75.12	100	0.11	15.62	9.8		11303		2	107.86

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	3.19	3.3	100		1.06	2.59	10.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 5FTB	3.19	75.122	1.34	11302	568	99.9	0.2241	0.2212	0.2228	0.2793	0.2782

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	16.325
f_angle_d	0.732
f_chiral_restr	0.046
f_plane_restr	0.004
f_bond_d	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3464
Nucleic Acid Atoms	120
Solvent Atoms
Heterogen Atoms	32

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing