4OQA

Structure of Human PARP-1 bound to a DNA double strand break in complex with (2Z)-2-(2,4-dihydroxybenzylidene)-3-oxo-2,3-dihydro-1-benzofuran-7-carboxamide

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	NSLS BEAMLINE X29A
Synchrotron site	NSLS
Beamline	X29A
Temperature [K]	100
Detector technology	CCD
Collection date	2013-07-28
Detector	ADSC QUANTUM 315r
Wavelength(s)	1.075
Spacegroup name	P 21 21 21
Unit cell lengths	65.160, 114.230, 294.240
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	20.000 - 3.650
R-factor	0.30022
Rwork	0.298
R-free	0.33424
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4dqy
RMSD bond length	0.004
RMSD bond angle	0.774
Data reduction software	xia2
Data scaling software	xia2
Refinement software	REFMAC (5.7.0032)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	50.000
High resolution limit [Å]	3.650	3.650
Number of reflections	24937

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	7.5	293	25 mM HEPES, 150 mM sodium chloride, 1 mM EDTA, 0.1 mM TCEP, 6.8% PEG3350, 2% ethylene glycol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K