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