1IEO

SOLUTION STRUCTURE OF MRIB-NH2

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2 mM MrIB-NH2	90% H2O/10% D2O		3.5	ambient	285
2	DQF-COSY	2 mM MrIB-NH2	90% H2O/10% D2O		3.5	ambient	285
3	E-COSY	2 mM MrIB-NH2	90% H2O/10% D2O		3.5	ambient	285

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	ARX	500
2	Bruker	AVANCE	750

NMR Refinement
Method	Details	Software
torsion angle dynamics	The structures are calculated from a total of 82 distance restraints derived from 14 intra-residue, 42 sequential, 3 medium and 23 long range NOEs, and 4 dihedral restraints.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	The submitted conformer models are the 20 structures with the lowest energy.
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	8 (closest to the average)

Additional NMR Experimental Information
Details	The sample was a purified single peptide component but on dissolution displayed evidence of multiple conformations (manifest by peaks "brothering" in the N-terminal region). The structures shown are for the major solution conformer.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6	Bruker
2	data analysis	Felix	230	Biosym Technologies
3	structure solution	X-PLOR	3.851	Brunger
4	refinement	X-PLOR	3.851	Brunger