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0.7 mM HIV-1 gp41 fusion domain U-2H, 13C, 15N; 75 mM sodium dodecyl sulfate; 25 mM sodium phosphate buffer pH 6.5; 0.05% (w/v) sodium azide; 93% H2O, 7% D2O; sample aligned with respect to the magnetic field using a stretched polyacryalmide gel
93% H2O/7% D2O
75 mM sodium dodecyl sulfate; 25 mM sodium phosphate; 0.05% (w/v) sodium azide
6.5
ambient
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
DMX
600
2
Bruker
DRX
600
3
Bruker
DMX
750
4
Bruker
DRX
800
NMR Refinement
Method
Details
Software
simulated annealing molecular dynamics
The structures are based on a total of 192 restraints. 57 are residual dipolar coupling (RDC) restraints, 74 are NOE-derived
distance restraints, 38 are TALOS-derived loose (minimum +/- 30 degrees from target value) dihedral angle restraints, and 23 are 3J_HNHA restraints. Note that RDC restraints were included only for the least mobile residues Ile-4 to Met-19 (with S2 > 0.65), dihedral restraints were included for residues Ile-4 to Ala-22, NOE and 3J_HNHA restraints were included for residues Val-2 to Met-24. Also note that the residue index in PDB and constraints files is such that HIV-1 gp41 fusion domain residue i is actually labeled as i+1.
XwinNMR
NMR Ensemble Information
Conformer Selection Criteria
all calculated structures submitted
Conformers Calculated Total Number
30
Conformers Submitted Total Number
30
Representative Model
1 (best agreement with measured residual dipolar couplings)
Additional NMR Experimental Information
Details
The structure was determined using triple-resonance NMR spectroscopy. Residual dipolar couplings were measured for a peptide-micelle complex aligned with respect to the magnetic field using a stretched polyacryamide gel.