2JZO

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

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	triple resonance	0.5-1 mM IIAMan+IIBMan	90% H2O/10% D2O	20 mM phosphate	6.5	ambient	303
2	12C-filtered/13C-separated NOE	0.5-1 mM IIAMan+IIBMan	100% D2O	20 mM phosphate	6.5	ambient	303
3	12C-SEPARATED/12C-FILTERED NOE	0.5-1 mM IIAMan+IIBMan	90% H2O/10% D2O	20 mM phosphate	6.5	ambient	303
4	13C-SEPARATED/15N-EDITED NOE	0.5-1 mM IIAMan+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	Backbone coordinates of productive IIAMan-IIBMan complex (2JZN) are held fixed, coordinates of IIBMan (1JZH) representing the non-productive complex is free to rotate and translate; the interfacial side chains are given torsional degrees of freedom; atomic overlap is allowed between the two molecules of IIBMan representing the productive and non-productive complexes since the two complexes do not co-exist; and the interproton distance restraints are treated as (sigmar-6)-1/6 sums since the NOEs arise from a mixture of productive and non-productive complexes. Further details in publication.	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	restrained regularized mean
Conformers Calculated Total Number	120
Conformers Submitted Total Number	1
Representative Model	1 (minimized average structure)

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.