8U4U

Crystal structure of 53BP1 tandem Tudor domain homodimer engineered with two disulfide bridges

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	APS BEAMLINE 19-BM
Synchrotron site	APS
Beamline	19-BM
Temperature [K]	100
Detector technology	CCD
Collection date	2019-02-15
Detector	ADSC QUANTUM 315r
Wavelength(s)	0.9794
Spacegroup name	P 21 21 21
Unit cell lengths	72.500, 161.825, 179.947
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	48.190 - 3.790
R-factor	0.2513
Rwork	0.246
R-free	0.29970
Structure solution method	MOLECULAR REPLACEMENT
RMSD bond length	0.002
RMSD bond angle	0.404
Data reduction software	HKL-2000
Data scaling software	HKL-2000
Phasing software	PHENIX
Refinement software	PHENIX (1.20.1_4487)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	50.000	3.926
High resolution limit [Å]	3.790	3.790
Rmerge	0.120	0.614
Rmeas	0.131	0.680
Rpim	0.052	0.284
Number of reflections	19541	1631
<I/σ(I)>	15.7	3.23
Completeness [%]	89.4
Redundancy	5.7
CC(1/2)	0.996	0.813

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP		293	Crystals of the protein (15 mg/mL) were obtained by the hanging drop vapor diffusion method, mixing 1 microliter of the sample in 50 mM Tris-HCl, pH 7.0, 100 mM NaCl and 1 microliter of the reservoir solution (0.1 M Bis-Tris, pH 6.5) at 293 K. The crystals were cryoprotected with 25% (w/v) xylitol