4QPN

Crystal Structure of Human Methyltransferase-Like Protein 21B

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	APS BEAMLINE 19-ID
Synchrotron site	APS
Beamline	19-ID
Temperature [K]	100
Detector technology	CCD
Collection date	2014-06-12
Detector	adsc q315
Wavelength(s)	0.97915
Spacegroup name	P 61
Unit cell lengths	38.665, 38.665, 193.915
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	33.480 - 1.250
R-factor	0.1238
Rwork	0.122
R-free	0.16670
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	solved with data from isomorphous crystal. model based on pdb entry 4LEC.
RMSD bond length	0.019
RMSD bond angle	1.980
Data reduction software	XDS
Data scaling software	Aimless (0.3.5)
Phasing software	PHASER
Refinement software	REFMAC

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	38.780	1.270
High resolution limit [Å]	1.250	1.250
Rmerge	0.092	0.956
Total number of observations		23595
Number of reflections	45170
<I/σ(I)>	19.6	3
Completeness [%]	100.0	100
Redundancy	11.1	10.8

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION		293	20% PEG-3350, 0.2 M tri-lithium citrate. Protein sample was incubated with SAH overnight. Endopeptidase was added to the protein sample immediately prior to crystallization set up, vapor diffusion, temperature 293K