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 1N09 | pdb_00001n09

A minimal beta-hairpin peptide scaffold for beta-turn display


SOLUTION NMR
NMR Experiment
ExperimentTypeSample ContentsSolventIonic StrengthpHPressureTemperature (K)Spectrometer
1DQF-COSY5 mM peptide, unbuffered at pH 5.090% H2O/10% D2O05.01 atm288
22D TOCSY5 mM peptide, unbuffered at pH 5.090% H2O/10% D2O05.01 atm288
32D ROESY5 mM peptide, unbuffered at pH 5.090% H2O/10% D2O05.01 atm288
42D ROESY5 mM peptide, unbuffered at pH 5.0100% D2O05.01 atm288
52D COSY-355 mM peptide, unbuffered at pH 5.0100% D2O05.01 atm288
NMR Spectrometer Information
SpectrometerManufacturerModelField Strength
1BrukerDRX500
NMR Refinement
MethodDetailsSoftware
Distance geometry and restrained molecular dynamics with chemical shift restraints.100 structures were calculated using distance geometry. The 80 structures of lowest penalty function were refined using the Sander module of AMBER (v6.0). The calculation employed 79 distance restraints, 12 dihedral angle restraints and 13 chemical shift restraints. The 20 structures of lowest violation energy were chosen to represent the structure. There are no violations of the input restraints > 0.1 A or 2 degrees. The rms. difference between calculation and observed chemical shifts is 0.09 ppm. 79% of the backbone geometries are in the most favourable region of the Ramachandran plot. The backbone heavy atom rmsd from the mean structure is 0.39+/-0.08 A.XwinNMR
NMR Ensemble Information
Conformer Selection Criteriastructures with the least restraint violations
Conformers Calculated Total Number80
Conformers Submitted Total Number20
Representative Model4 (closest to the average)
Additional NMR Experimental Information
DetailsChemical shift assignments were determined using standard 2D homonuclear techniques.
Computation: NMR Software
#ClassificationVersionSoftware NameAuthor
1collectionXwinNMR3.1bruker
2data analysisFelix980bruker
3structure solutionDGII980Tim Havel
4refinementAmber6.0Case, Kollman, ET. AL.
5structure solutionAmber6.O