7K7V

The X-ray crystal structure of SSR4, an S. pombe chromatin remodelling protein: iodide derivative

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	AUSTRALIAN SYNCHROTRON BEAMLINE MX2
Synchrotron site	Australian Synchrotron
Beamline	MX2
Temperature [K]	100
Detector technology	CCD
Collection date	2013-06-28
Detector	ADSC QUANTUM 315
Wavelength(s)	1.548300
Spacegroup name	P 21 21 21
Unit cell lengths	50.157, 67.496, 67.534
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	40.291 - 1.882
Rwork	0.168
R-free	0.20410
Structure solution method	SAD
RMSD bond length	0.012
RMSD bond angle	1.625
Data reduction software	XDS
Data scaling software	Aimless
Phasing software	Auto-Rickshaw
Refinement software	REFMAC (5.8.0267)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	40.300	1.920
High resolution limit [Å]	1.880	1.880
Rmerge	0.161	1.246
Rpim	0.046	0.432
Number of reflections	18912	976
<I/σ(I)>	13.5	2.2
Completeness [%]	98.3	78.3
Redundancy	13	8.9
CC(1/2)	0.997	0.488

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP		281	Crystallisation experiments were set up in SD2 sitting drop plates at 8 C with 200 nL protein plus 200 nL reservoir with 50 uL of reservoir in the wells. The protein concentration was 5 mg/mL. Reservoir conditions contained 1.5 to 1.9 M ammonium sulfate, 0.7-12% dioxane and either 100 mM MES, 100 mM bis-tris or 10% (v/v) malate-MES-tris buffer at a pH between 5.5 and 5.8