4U6M

Crystal structure of DNA/RNA duplex obtained in the presence of Spermine

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	PHOTON FACTORY BEAMLINE BL-5A
Synchrotron site	Photon Factory
Beamline	BL-5A
Temperature [K]	100
Detector technology	CCD
Collection date	2013-10-27
Detector	ADSC QUANTUM 315r
Wavelength(s)	1.0
Spacegroup name	P 61
Unit cell lengths	49.090, 49.090, 45.990
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	42.520 - 1.900
Rwork	0.206
R-free	0.23340
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4u6l
RMSD bond length	0.006
RMSD bond angle	1.163
Data reduction software	CrystalClear
Data scaling software	d*TREK
Phasing software	PHENIX
Refinement software	CNS

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	42.520	42.520	1.970
High resolution limit [Å]	1.900	4.090	1.900
Rmerge	0.040	0.020	0.358
Total number of observations	51463	5495	5139
Number of reflections	5022
<I/σ(I)>	23.2	80.9	5.7
Completeness [%]	99.8	98.8	99.8
Redundancy	10.17	10.67	10.25

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7	293	Na Cacodylate, Spermine tetrahydrochloride