5DUN

The crystal structure of OMe substituted twister ribozyme

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	APS BEAMLINE 24-ID-E
Synchrotron site	APS
Beamline	24-ID-E
Temperature [K]	100
Detector technology	CCD
Collection date	2015-02-23
Detector	ADSC QUANTUM 315
Wavelength(s)	0.9792
Spacegroup name	P 43 21 2
Unit cell lengths	46.819, 46.819, 143.751
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	44.517 - 2.640
R-factor	0.1969
Rwork	0.194
R-free	0.25230
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4rge
RMSD bond length	0.010
RMSD bond angle	1.650
Data reduction software	XDS
Data scaling software	XDS
Phasing software	PHASER
Refinement software	PHENIX (1.9_1692)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	143.700	2.730
High resolution limit [Å]	2.640	2.640
Rmerge	0.183	1.611
Number of reflections	5164
<I/σ(I)>	14.5
Completeness [%]	99.9	100
Redundancy	2	2

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	EVAPORATION	8	293	0.2 M Calcium acetate, 0.1 M Imidazole pH 8.0, 20% PEG 1000