1SQU

Structural Genomics, Crystal structure of the CheX protein from Thermotoga maritima

Experimental procedure

Experimental method	MAD
Source type	SYNCHROTRON
Source details	APS BEAMLINE 19-ID
Synchrotron site	APS
Beamline	19-ID
Temperature [K]	100
Detector technology	CCD
Collection date	2003-03-02
Detector	SBC-2
Wavelength(s)	0.9795, 0.9797, 0.94656
Spacegroup name	P 21 21 21
Unit cell lengths	55.241, 73.031, 78.341
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	45.150 - 2.400
R-factor	0.239
Rwork	0.239
R-free	0.32000
Structure solution method	MAD
RMSD bond length	0.008
RMSD bond angle	1.400
Data scaling software	HKL-2000
Phasing software	CNS
Refinement software	CNS (1.1)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	50.000	2.480
High resolution limit [Å]	2.380	2.380
Rmerge	0.081	0.580
Number of reflections	12325
<I/σ(I)>	31.7	2.33
Completeness [%]	93.4	91.6
Redundancy	6	5

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7	289	20% PEG 3350, 10% isopropanol, 0.1M sodium Cacodylate, 15% MPD, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 289K