1LB7

IGF-F1-1, A PEPTIDE ANTAGONIST OF IGF-1

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	DQF-COSY	5.0 mM igf-f1-1 90%, 10% D2O, pH 5.1	H2O	0	5.1	atm	303
2	2D-ROESY	5.0 mM igf-f1-1 90%, 10% D2O, pH 5.1	H2O	0	5.1	atm	303
3	COSY-35	5.0 mM igf-f1-f, 100% D2O, pH* 5.1	D2O	0	5.1	atm	303
4	2D-ROESY	5.0 mM igf-f1-f, 100% D2O, pH* 5.1	D2O	0	5.1	atm	303
5	1H-13C-HSQC	5.0 mM igf-f1-f, 100% D2O, pH* 5.1	D2O	0	5.1	atm	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500
2	Bruker	DRX	600

NMR Refinement
Method	Details	Software
distance geometry, molecular dynamics	The structures are based on 91 distance restraints and 26 dihedral angle restraints. None of the final structures have violations > 0.07A or 1.0 degrees. The mean rmsd to the mean coordinates for heavy atoms of residues Cys3 to Tyr15 is 0.31+/-0.06 A.	DGII

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	80
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average,fewest violations,lowest energy,minimized average structure)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques to generate distance (ROESY) and dihederal angle (DQF-COSY, COSY-35)restraints. Additional dihedral angle restraints were derived from chemical shift information using the program TALOS

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	DGII	v98.0	Havel
2	refinement	Discover	v98.0	Accelrys
3	refinement	TALOS	Feb 2000	Delaglio & Bax