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Solution structure of the N-terminal membrane anchor of E. coli enzyme IIA(Glucose)
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D NOESY, TOCSY, DQF-COSY
natural abundance synthetic peptide 5 mM peptide and 50 mM dihexanoyl phosphatidylglycerol
90% H2O and 10% D2O
no buffer
5.4
ambient
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
INOVA
600
NMR Refinement
Method
Details
Software
simulated annealing
The structures are based on 146 distances derived from the NOESY spectra.
No dihedral angles or hydrogen-bond restraints were applied.
NMRPipe/nmrDraw
NMR Ensemble Information
Conformer Selection Criteria
No NOE violations greater than 0.20 A;
rms difference for bond deviations from ideality less than 0.01 A;
rms difference for angle deviations from ideality less than 2 degrees;
Structures with the lowerest energies in the ensemble;
Structures most resemble the average structure.
Conformers Calculated Total Number
100
Conformers Submitted Total Number
20
Representative Model
1 (most resemble the average structure.)
Additional NMR Experimental Information
Details
This structure was determined using standard 2D homonuclear NMR techniques.
Computation: NMR Software
#
Classification
Version
Software Name
Author
1
data processing
NMRPipe/nmrDraw
2.1
Delaglio, F.
2
noe picking
PIPP
1.0
Garrett, D.
3
structural calculations
XPLOR-NIH
1.06
Schwieters, C.D., Kuszewski, J., Tjandra, N, Clore, G.M.