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NMR structure of the Cys28His mutant (E form) of the nucleocapsid protein NCp7 of HIV-1.
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D TOCSY
2 mM His28(12-53)NCp7 90% H2O, 10% D2O with 3 equivalents of zinc
90% H2O, 10% D2O, pH 6.6 from 278K to 323K
6 mM ZnSO4
6.6
ambient
278
2
2D NOESY
2 mM His28(12-53)NCp7 90% H2O, 10% D2O with 3 equivalents of zinc
90% H2O, 10% D2O, pH 6.6 from 278K to 323K
6 mM ZnSO4
6.6
ambient
278
3
1H-15N HSQC
2 mM His28(12-53)NCp7 90% H2O, 10% D2O with 3 equivalents of zinc
90% H2O, 10% D2O, pH 6.6 from 278K to 323K
6 mM ZnSO4
6.6
ambient
278
4
2D TOCSY
2 mM His28(12-53)NCp7 100% D2O with 3 equivalents of zinc
100% D2O, pH 6.6 from 278K to 323K
6 mM ZnSO4
6.6
ambient
278
5
2D NOESY
2 mM His28(12-53)NCp7 100% D2O with 3 equivalents of zinc
100% D2O, pH 6.6 from 278K to 323K
6 mM ZnSO4
6.6
ambient
278
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
AMX
600
NMR Refinement
Method
Details
Software
distance geometry, simulated annealing and molecular dynamics
The structure has been calculated using 339 NOE derived distance restraints.
XwinNMR
NMR Ensemble Information
Conformer Selection Criteria
structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number
100
Conformers Submitted Total Number
1
Representative Model
1 (fewest violations,lowest energy)
Additional NMR Experimental Information
Details
The structure was determined
using standard 2D homonuclear
experiments and 1H-15N HSQC
experiments.