SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample Contents1.4 MM IGF-I (15N), 2.0 MM PEPTIDE, 25 MM SODIUM ACETATE
Solventn/a
Ionic Strength25 MM
pH5.1
Pressure1 atm
Temperature (K)313
Experiment(s):3D_15N-SEPARATED_NOESY, HNHA, D-HNHB, 3D 15N-SEPARATED LOW MIXING TIME TOCSY, 2D-15N-FILTERED NOESY, 3D_13C-SEPARATED_NOESY, 3D-13_FILTERED, 13C-EDITED NOESY, 2D-13C-FILTERED NOESY
Spectrometer Information
Manufacturer Model Field Strength
BRUKER DRX 800.0
BRUKER DRX 600.0
NMR Refinement
Method TORSION ANGLE DYNAMICS, SIMULATED ANNEALING
Details THE COMPLEX WAS DETERMINED USING A TOTAL OF 905 NOE DISTANCE RESTRAINTS (146 INTRA RESIDUE, 203 SEQUENTIAL, 232 MEDIUM RANGE, 237 LONG-RANGE AND 87 INTERMOLECULAR), 24 HYDROGEN BOND RESTRAINTS, 139 DIHEDRAL ANGLE RESTRAINTS (72 PHI, 44 PSI AND 23 CHI-1). THE BEST 20 CONFORMERS (OF 100) HAD NO DISTANCE VIOLATIONS GREATER THAN 0.11A AND NO DIHEDRAL ANGLE VIOLATIONS GREATER THAN 1.5 DEGREES. RMSD FROM EXPERIMENTAL DISTANCE RESTRAINTS WAS 0.0049+/-0.0008. THE MEAN BACKBONE RMSD FROM THE MEAN STRUCTURE WAS 0.35 +/- 0.06 A FOR N, CA AND C ATOMS OF RESIDUES 3-26, 42-63 of IGF-I AND RESIDUES 3-15 OF THE PEPTIDE. 82% (17%) OF RESIDUES WERE IN THE MOST FAVOURED (ALLOWED) REGION OF PHI/PSI SPACE; NO RESIDUES WERE CONSISTENTLY IN THE DISALLOWED REGION.
NMR Ensemble Information
Conformer Selection Criteria LEAST VIOLATION OF EXPERIMENTAL RESTRAINTS
Conformers Calculated Total Number 100
Conformers Submitted Total Number 20
Representative Model Choice Rationale
1 closest to the average, fewest violations
Additional NMR Experimental Information
1 THE RESONANCE ASSIGNMENTS WERE DETERMINED USING TRIPLE-RESONANCE NMR SPECTROSCOPY.
Computation: NMR Software
# Classification Software Name Author
1 structure solution FELIX 98 ACCELRYS
2 structure solution XWINNMR 3.1 ACCELRYS
3 refinement CNS 2000.1 ACCELRYS