1G55

Structure of human DNMT2, an enigmatic DNA methyltransferase homologue

Experimental procedure

Experimental method	MAD
Source type	SYNCHROTRON
Source details	NSLS BEAMLINE X12C
Synchrotron site	NSLS
Beamline	X12C
Temperature [K]	95
Detector technology	CCD
Detector	BRANDEIS
Wavelength(s)	0.98
Spacegroup name	I 41
Unit cell lengths	116.500, 116.500, 69.800
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	20.000 - 1.800
R-factor	0.2121 *
Rwork	0.210
R-free	0.25000
Structure solution method	MIR
RMSD bond length	0.010
RMSD bond angle	1.500
Data reduction software	DENZO
Data scaling software	SCALEPACK
Phasing software	PHASES
Refinement software	X-PLOR (3.851)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	20.000	1.830
High resolution limit [Å]	1.800	1.800
Rmerge	0.051	0.206
Total number of observations	146987 *
Number of reflections	41963 *	1976 *
<I/σ(I)>	16.4	3.74
Completeness [%]	96.8	93.2
Redundancy	3.5

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	8 *	16 *	1.3-1.4 M ammonium sulfate, 8 % glycerol, 100 mM glycine-NaOH pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 289K
1	VAPOR DIFFUSION, HANGING DROP	8 *	16 *	1.3-1.4 M ammonium sulfate, 8 % glycerol, 100 mM glycine-NaOH pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 289K
1	VAPOR DIFFUSION, HANGING DROP	8 *	16 *	1.3-1.4 M ammonium sulfate, 8 % glycerol, 100 mM glycine-NaOH pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 289K

Crystallization Reagents in Literatures

ID	crystal ID	solution	reagent name	concentration (unit)	details
1	1	drop	protein	20 (mg/ml)
2	1	drop	Tris-HCl	20 (mM)
3	1	drop	EDTA	1 (mM)
4	1	drop	2-mercaptoethanol	0.1 (%)
5	1	drop		150 (mM)
6	1	reservoir	ammonium sulfate	1.3-1.4 (M)
7	1	reservoir	glycerol	8 (%)
8	1	reservoir	glycine-NaOH	100 (mM)