1VSQ

Solution NMR structure of the productive complex between IIAMannose and IIBMannose of the mannose transporter of the E. coli phosphotransferase system

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	15N-edited/13C-edited NOE	0.5-1 mM IIAMan(H10E)+IIBMan	90% H2O/10% D2O	20 mM phosphate	6.5	ambient	303
2	12C-filtered/13C-separated NOE	0.5-1 mM IIAMan(H10E)+IIBMan	100% D2O	20 mM phosphate	6.5	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX500	500
2	Bruker	DMX600	600
3	Bruker	DRX600	600
4	Bruker	DRX800	800

NMR Refinement
Method	Details	Software
conjoined rigid body/torsion angle simulated annealing	COORDINATES OF IIAMAN (1PDO) AND IIBMAN (2JZH) ARE TREATED AS RIGID BODIES WITH THE INTERFACIAL SIDE CHAINS GIVEN TORSIONAL DEGREES OF FREEDOM. RESIDUES 130- 134 OF IIAMAN ARE ALSO GIVEN TORSIONAL DEGREES OF FREEDOM SINCE INTERMOLECULAR NOES WERE OBSERVED INVOLVED THESE RESIDUES ALTHOUGH THEY ARE NOT VISIBLE IN THE ELECTRON DENSITY MAP OF THE X-RAY STRUCTURE OF FREE IIAMAN. FURTHER DETAILS IN PUBLICATION. THE COORDINATES of 1VSQ ARE DERIVED DIRECTLY FROM THOSE OF 2JZN, THE IIAMAN(H10E)-IIBMAN COMPLEX.	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	restrained regularized mean
Conformers Calculated Total Number	120
Conformers Submitted Total Number	2

Additional NMR Experimental Information
Details	Triple resonance experiments for assignment. Quantitative J correlation experiments for heteronuclear scalar couplings. 3D and 2D isotope filtered/isotope-separated NOE experiments for intermolecular NOEs.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR NIH	2.18.1	Schwieters, Kuszewski, and Clore
2	refinement	X-PLOR NIH	2.18.1	Schwieters, Kuszewski, and Clore