1Q68

Solution structure of T-cell surface glycoprotein CD4 and Proto-oncogene tyrosine-protein kinase LCK fragments


SOLUTION NMR
NMR Experiment
ExperimentTypeSample ContentsSolventIonic StrengthpHPressureTemperature (K)Spectrometer
1HNCA, HN(CO)CA, HNCACB, HN(CO)CACB, CCONH, HCCONH, HCCH TOCSY0.5 mM CD4-Lck-Zn2+, U-15N,13C; 20 mM acetate, 20 mM NaCl, 0.15% beta-mercaptoethanol95% H2O/5% D2O5.1ambient298
215N-NOESY, 15N-TOCSY0.5 mM CD4-Lck-Zn2+, U-15N; 20 mM acetate, 20 mM NaCl, 0.15% beta-mercaptoethanol95% H2O/5% D2O5.1ambient298
3D2O NOESY, D2O TOCSY0.5 mM CD4-Lck-Zn2+; 20 mM acetate, 20 mM NaCl, 0.15% beta-mercaptoethanol100% D2O5.1ambient298
4Cd-H HMQC, Cd-H NOESY-HMQC1.0 mM CD4-Lck-Cd2+; 20 mM acetate, 20 mM NaCl, 0.15% beta-mercaptoethanol100% D2O5.1ambient298
NMR Spectrometer Information
SpectrometerManufacturerModelField Strength
1BrukerAVANCE500
2VarianINOVA750
NMR Refinement
MethodDetailsSoftware
distance geometry, simulated annealing, molecular dynamics, torsion angle dynamicsThe structures are based on a total of 419 distance restraints (406 NOEs, four Zn-S restraints from Cd-H HMQC experiments, nine hydrogen bonds) and 63 angle restraints (57 dihedral angle restraints, six S-Zn-S angle restraints from Cd-H HMQC experiments).Felix
NMR Ensemble Information
Conformer Selection CriteriaThe submitted conformer models are the 10 structures with the lowest energy.
Conformers Calculated Total Number100
Conformers Submitted Total Number10
Representative Model1 (noe limit 0.5 angstrom, angle violation 5 degrees)
Computation: NMR Software
#ClassificationVersionSoftware NameAuthor
1processingFelixMolecular Simulations Inc.
2structure solutionDYANAGuntert, Wuthrich
3structure solutionX-PLORBrunger
4refinementX-PLORBrunger