Solution NMR structure of the 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 | 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 |
