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NMR Study of the Fibrillin-1 cbEGF12-13 Pair of Ca2+ Binding Epidermal Growth Factor-like Domains
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 20 mM CaCl2, 4.55 mM Tris, 3.6 mM protein 99.9% D2O 20 mM CaCl2, 4.55 mM Tris 6.5 ambient 306 2 3D_15N-separated_NOESY 20 mM CaCl2, 4.55 mM Tris, 3.8 mM 15N-protein 90% H2O/10% D2O 20 mM CaCl2, 4.55 mM Tris 6.5 ambient 306 3 HMQC-J 20 mM CaCl2, 4.55 mM Tris, 3.8 mM 15N-protein 90% H2O/10% D2O 20 mM CaCl2, 4.55 mM Tris 6.5 ambient 306 4 HSQC (slow HN) 20 mM CaCl2, 4.55 mM Tris, 3.8 mM 15N-protein 90% H2O/10% D2O 20 mM CaCl2, 4.55 mM Tris 6.5 ambient 306
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 GE OMEGA 500 2 GE OMEGA 600 3 GE OMEGA 750
NMR Refinement Method Details Software simulated annealing 1892 distance constraints including 411 ambiguous constraints, 26 torsion angle phi restraints, 24 restraints for 12 hydrogen bonds
RMSD from experimental restraints
All 0.013+/-0.001
(1932)
Intraresidue 0.009+/-0.002
(504)
Sequential 0.011+/-0.002
(388)
Short-range
(i-j<=4) (211) 0.015+/-0.003
Long-range 0.013+/-0.002
(378)
Ambiguous 0.015+/-0.002
(411)
H-bonds 0.014+/-0.004
(24)
Calcium 0.012+/-0.005
(16)
RMSD Phi rest. 0.177+/-0.093
(26) X-PLOR
NMR Ensemble Information Conformer Selection Criteria structures with acceptable covalent geometry Conformers Calculated Total Number 100 Conformers Submitted Total Number 25 Representative Model 6 (closest to the average)
Computation: NMR Software # Classification Version Software Name Author 1 structure solution X-PLOR 3.81 Brunger 2 refinement X-PLOR 3.81 Brunger