Experiment: 9ZX7

Crystal structure of the N4BP2 polynucleotide kinase domain complexed with ATP or ADP, Mg, and the trideoxynucleotide substrate dACA or its 5'-phosphorylated product dpACA.

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	AlphaFold

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		295	Crystals were grown in 20% PEG 3350, 0.2 M ammonium sulfate, 0.1 M MES/imidazole (pH 6.0), 100 mM Mg2+, 2 mM ATP, 10% isopropanol, and 5% PEG 400, and were soaked for 16 h in the same solution supplemented with 5 mM ATP and 1 mM dACA.

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 103.537	α = 90
b = 107.315	β = 90
c = 113.991	γ = 90

Symmetry
Space Group	I 2 2 2

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 EIGER2 X 9M		2024-08-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS-II BEAMLINE 17-ID-1	0.920105	NSLS-II	17-ID-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	2.21	33.04	100	0.111	0.121	0.046	0.997	9.9	6.9		32150			49.06

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.21	2.25	100		1.783	1.939	0.757	0.423	1.1	6.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	FREE R-VALUE	2.21	33.03	1.34	32123	1561	99.9	0.1945	0.1923	0.1918	0.2377	0.2368	58.67

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	15.1746
f_angle_d	0.6731
f_chiral_restr	0.0434
f_bond_d	0.0053
f_plane_restr	0.0045

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3821
Nucleic Acid Atoms	152
Solvent Atoms	257
Heterogen Atoms	114

Software

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