5CCX

Structure of the product complex of tRNA m1A58 methyltransferase with tRNA3Lys as substrate

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	ALS BEAMLINE 8.3.1
Synchrotron site	ALS
Beamline	8.3.1
Temperature [K]	103
Detector technology	CCD
Collection date	2014-09-14
Detector	ADSC QUANTUM 315r
Wavelength(s)	1.11587
Spacegroup name	P 43 21 2
Unit cell lengths	136.770, 136.770, 177.160
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	54.130 - 2.100
R-factor	0.208
Rwork	0.207
R-free	0.23700
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	5ccb
RMSD bond length	0.004
RMSD bond angle	0.699
Data reduction software	XDS
Data scaling software	XSCALE
Phasing software	PHENIX
Refinement software	PHENIX (1.8.1_1168)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	108.000	2.150
High resolution limit [Å]	2.100	2.100
Rmerge	0.103	2.590
Number of reflections	98180
<I/σ(I)>	16.7	0.9
Completeness [%]	99.9	100
Redundancy	8.1	8.2

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7.5	289	1 microliter protein solution (4.8 mg/ml protein, 66.4 micromolar tRNA3Lys, 2mM SAM, 1mM MgCl2 and 50mM Hepes pH 7.5) plus 1 microliter reservoir solution (0.1 M NaAcetate, pH 4.8-5.0, 2% w/v PEG 4000 and 15% v/v MPD) over 1000 microliters reservoir solution