5KPN

Structure of human PARP1 catalytic domain bound to a quinazoline-2,4(1H,3H)-dione inhibitor

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	2.5M AMMONIUM SULFATE, 100mM TRIS

Crystal Properties
Matthews coefficient	Solvent content
2.35	47.59

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.43	α = 90
b = 92.37	β = 90
c = 164.01	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	100	CCD	ADSC QUANTUM 315r		2015-09-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL17U	0.987	SSRF	BL17U

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	2.3	92.37	99.5	19.3	12.1		33537

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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		THROUGHOUT	2.3	82	31737	1590	99.25	0.23598	0.23323	0.29293	RANDOM	25.485

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]
0.07			1.4		-1.47

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.146
r_dihedral_angle_4_deg	19.457
r_dihedral_angle_3_deg	17.142
r_dihedral_angle_1_deg	7.369
r_long_range_B_refined	5.957
r_long_range_B_other	5.957
r_mcangle_other	3.692
r_mcangle_it	3.691
r_scangle_other	3.219
r_mcbond_other	2.078
r_mcbond_it	2.076
r_scbond_it	1.82
r_scbond_other	1.82
r_angle_refined_deg	1.581
r_angle_other_deg	1.092
r_chiral_restr	0.091
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
r_bond_other_d	0.003
r_gen_planes_other	0.002
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	5517
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	64

Software

Software
Software Name	Purpose
REFMAC	refinement
iMOSFLM	data reduction
SCALEPACK	data scaling
PHASER	phasing