SOLUTION NMR Experimental Data

Experimental Details
Sample Conditions
Sample Contents2.5 mM calbindin; 95% H2O; 5% D2O
Solvent95% H20; 5% D2O
Ionic Strengthno added salts
Temperature (K)300
Experiment(s):2D_COSY, 2D_NOESY, 2D_TOCSY
Sample Contents2.5 mM calbindin D9k U-15N; 95% H2O; 5% D2O
Solvent95% H2O; 5% D2O
Ionic Strengthno added salts
Temperature (K)300
Experiment(s):2D_15N-1H_HSQC, 3D_15N-separated_TOCSY, 3D_15N-separated_NOESY, HNHA, HNHB
Sample Contents2.5 mM calbindin D9k; 100% D20
Solvent100% D2O
Ionic Strengthno added salts
Temperature (K)300
Spectrometer Information
Manufacturer Model Field Strength
Bruker DMX 750.0
Bruker AMX 500.0
NMR Refinement
Method distance geometry, simulated annealing
Details The structures are based on 1042 NOE restraints (186 intraresidue, 269 sequential, 289 medium range (2-4 residues apart), 298 long range), 18 hydrogen bond restraints (assigned as described in Skelton et al., 1995), and 115 dihedral constraints (45 phi, 42 psi, and 28 chi1).
NMR Ensemble Information
Conformer Selection Criteria The full ensemble was ordered by lowest residual constraint violations, then the top 22 with favorable covalent geometries and AMBER energies were selected
Conformers Calculated Total Number 50
Conformers Submitted Total Number 22
Representative Model Choice Rationale
1 closest to the average
Additional NMR Experimental Information
1 This structure was determined using a combination of standard 2D homonuclear and 15N-based 3D methods.
Computation: NMR Software
# Classification Software Name Author
1 refinement AMBER 4.1 Pearlmann
2 data analysis GENXPK 1 Gippert
3 data analysis GLOMSA unknown Guntert
4 data analysis FELIX 97 Molecular Simulations, Inc.
5 structure solution AMBER 4.1 Pearlmann
6 structure solution DIANA 2.8 Guntert