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Differences and Similarities in Solution Structures of Angiotensin I & II: Implication for Structure-Function Relationship
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
DQF-COSY
2.5 mM; DMSO-d6
DMSO-d6
ambient
298
2
2D TOCSY
2.5 mM; DMSO-d6
DMSO-d6
ambient
298
3
2D NOESY
2.5 mM; DMSO-d6
DMSO-d6
ambient
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
DPX
400
NMR Refinement
Method
Details
Software
simulated annealing, torsion angle dynamics
This structure is based on a 225 NOE-derived distance constraints, 7 dihedral angle restraints, 1 distance restraint from hydrogen bond
XwinNMR
NMR Ensemble Information
Conformer Selection Criteria
target function for models 1-20, mean energy minimized for model 21
Conformers Calculated Total Number
300
Conformers Submitted Total Number
21
Representative Model
21 (n/a)
Additional NMR Experimental Information
Details
This structure was determined using standard 2D homonuclear techniques.
Models 1-20 are the family ensemble, while model 21 is the minimized
average structure derived from that ensemble.
Computation: NMR Software
#
Classification
Version
Software Name
Author
1
collection
XwinNMR
2.6
2
processing
XwinNMR
2.6
3
data analysis
XEASY
1.3
Tai-he Xia, Christian Bartels, Kurt Wuthtrich
4
structure solution
DYANA
1.5
Peter Guntert, Christian Mumenthaler, Kurt Wuthrich