4JPB

The structure of a ternary complex between CheA domains P4 and P5 with CheW and with an unzipped fragment of TM14, a chemoreceptor analog from Thermotoga maritima.

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	CHESS BEAMLINE A1
Synchrotron site	CHESS
Beamline	A1
Temperature [K]	100
Detector technology	CCD
Collection date	2012-02-17
Detector	ADSC QUANTUM 210
Wavelength(s)	0.976
Spacegroup name	H 3 2
Unit cell lengths	213.588, 213.588, 208.838
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	46.156 - 3.186
R-factor	0.1977
Rwork	0.196
R-free	0.22030
Structure solution method	MOLECULAR REPLACEMENT
RMSD bond length	0.011
RMSD bond angle	1.331
Data reduction software	HKL-2000
Data scaling software	HKL-2000
Phasing software	PHASER
Refinement software	PHENIX ((phenix.refine: 1.8.1_1168))

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	46.200	3.300
High resolution limit [Å]	3.186	3.200
Rmerge	0.105	0.513
Number of reflections	30554
<I/σ(I)>	20.3	1.4
Completeness [%]	99.7	99.2
Redundancy	5.5

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	Cubic shaped crystals (50x50x50 um3) were grown from a mixture of 520 uM Tm14s, 457 uM CheA 354 and 121 uM CheW after 1 month by vapor diffusion from a 2 ul drop (1:1 mixture of protein and reservoir: 500 ul reservoir of 0.2 M sodium acetate trihydrate, 0.1 M Tris (pH 8.5), 15% w/v polyethylene glycol 4,000), VAPOR DIFFUSION, HANGING DROP, temperature 298K