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Crystal structure of omega transcriptional repressor at 1.5A resolution

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	EMBL/DESY, HAMBURG BEAMLINE X11
Synchrotron site	EMBL/DESY, HAMBURG
Beamline	X11
Temperature [K]	100
Detector technology	CCD
Detector	MARRESEARCH
Wavelength(s)	0.9073
Spacegroup name	P 61
Unit cell lengths	46.100, 46.100, 88.300
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	29.600 - 1.500
R-factor	0.211
Rwork	0.211
R-free	0.23200
Structure solution method	MIR
RMSD bond length	0.006
RMSD bond angle	18.300 *
Data reduction software	DENZO
Data scaling software	SCALEPACK
Phasing software	MLPHARE
Refinement software	CNS (1.0)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	29.600
High resolution limit [Å]	1.500	1.500 *
Rmerge	0.026 *	0.384 *
Total number of observations	69483 *
Number of reflections	16703
Completeness [%]	97.6	95.1 *

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7.5 *	18 *	PEG 3350, 100mM Sodium Acetate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystallization Reagents in Literatures

ID	crystal ID	solution	reagent name	concentration (unit)	details
1	1	drop	protein	25 (mg/ml)
2	1	drop	Tris-HCl	50 (mM)	pH7.5
3	1	drop		50 (mM)
4	1	drop	glycerol	5 (%(v/v))
5	1	reservoir	PEG3350	30 (%(w/v))
6	1	reservoir	sodium acetate	100 (mM)
7	1	reservoir	Tris-HCl	100 (mM)	pH8.5