2LP4 | pdb_00002lp4

Solution structure of P1-CheY/P2 complex in bacterial chemotaxis

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	200 mM [U-15N; U-2H] CheY, 3000 mM [U-2H] CheA P1, 250 mM [U-2H] CheA P2	92% H2O/8% D2O	0.05	6.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600

NMR Refinement
Method	Details	Software
torsion angle dynamics	THE AUTHORS STATE THAT THE STRUCTURE CALCULATION USED X-RAY STRUCTURES SALMONELLA TYPHIMURIUM P1 (1I5N) AND E. COLI CHEY/P2 (1EAY). THEY WERE CONFINED AS RIGID BODIES EXCEPT FOR THE DOMAIN LINKERS. THE PROGRAM XPLOR-NIH WAS USED TO REFINE THE STRUCTURES.	ANSIG3.3

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	25
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	chemical shift assignment	ANSIG3.3		Kraulis
2	refinement	XPLOR-NIH		Schwieters, Kuszewski, Tjandra and Clore