4N47

Structure of Thermus thermophilus Argonaute bound to guide DNA and 12-mer target DNA

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	2012-11-15
Detector	ADSC QUANTUM 315
Wavelength(s)	0.97
Spacegroup name	P 21 21 21
Unit cell lengths	58.886, 110.548, 124.039
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	38.329 - 2.823
R-factor	0.1957
Rwork	0.192
R-free	0.26390
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	3f73
RMSD bond length	0.008
RMSD bond angle	1.010
Data reduction software	DENZO
Data scaling software	SCALEPACK
Phasing software	PHASER
Refinement software	PHENIX (1.8.2_1309)

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	50.000	50.000	2.850
High resolution limit [Å]	2.800	7.590	2.800
Rmerge	0.096	0.052	0.612
Number of reflections	19791
<I/σ(I)>	12.9
Completeness [%]	99.2	91.2	99.8
Redundancy	5.9	5.7	6.1

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	8.5	306	0.2 M magnesium chloride, 0.1 M Tris-HCl, pH 8.5, 25% PEG3350, VAPOR DIFFUSION, HANGING DROP, temperature 306K