4FAW

Structure of Oceanobacillus iheyensis group II intron in the presence of K+, Mg2+ and a hydrolyzed oligonucleotide fragment

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	APS BEAMLINE 24-ID-C
Synchrotron site	APS
Beamline	24-ID-C
Temperature [K]	100
Detector technology	CCD
Collection date	2011-07-08
Detector	ADSC QUANTUM 315
Wavelength(s)	0.9795
Spacegroup name	P 21 21 21
Unit cell lengths	89.900, 95.540, 226.430
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	47.770 - 2.700
R-factor	0.20312
Rwork	0.201
R-free	0.24192
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	3igi
RMSD bond length	0.007
RMSD bond angle	2.363
Data reduction software	XDS
Data scaling software	XSCALE
Phasing software	PHASER
Refinement software	REFMAC (5.6.0117)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	47.770	2.770
High resolution limit [Å]	2.700	2.700
Rmerge	0.066	1.200
Number of reflections	50854
<I/σ(I)>	12.39	1.7
Completeness [%]	98.4	99.8
Redundancy	3.5	3.6

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7	303	100 mM magnesium acetate, 200 mM potassium chloride, 50 mM HEPES sodium, pH 7.0, 6% PEG8000, VAPOR DIFFUSION, HANGING DROP, temperature 303K