5CCB

Crystal structure of human m1A58 methyltransferase in a complex with tRNA3Lys and SAH

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]	103.15
Detector technology	CCD
Collection date	2014-09-05
Detector	ADSC QUANTUM 315r
Wavelength(s)	1.11587
Spacegroup name	P 43 21 2
Unit cell lengths	137.180, 137.180, 177.020
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	74.373 - 2.000
R-factor	0.2
Rwork	0.199
R-free	0.22160
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	2pwy
RMSD bond length	0.005
RMSD bond angle	0.855
Data reduction software	XDS
Data scaling software	XSCALE
Refinement software	PHENIX (1.8.1_1168)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	97.000	2.500
High resolution limit [Å]	2.000	2.000
Rmerge	0.078	2.230
Number of reflections	113960
<I/σ(I)>	18.6	1
Completeness [%]	99.9	99.9
Redundancy	8.1	7.6

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7.5	289.15	1microliter protein solution (4.8 mg/ml protein, 66.4 micromolar tRNA3Lys, 2 mM s-adenosyl-L-homocysteine, 1mM MgCl2 and 50 mM Hepes pH7.5) and 1 microliter reservoir solution (0.1 M NaAcetate, pH 4.8-5.0, 2% w/v PEG 4000, 15% v/v MPD) suspended 1000 microliters reservoir solution