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Productive complex between MMP-12 and synthetic triple-helical collagen, revealed through paramagnetic NMR
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-15N HSQC 0.4 mM [U-99% 15N] MMP, 0.6 mM TOAC labelled in P5 position THP 90% H2O/10% D2O 6.6 ambient 299 2 2D 1H-15N HSQC 0.25 mM [U-100% 12C; U-100% 15N; U-100% 2H; U-100% 13CH3] MMP, 0.38 mM TOAC labelled in P8' position THP 90% H2O/10% D2O 6.6 ambient 299 3 2D 1H-13C HSQC 0.25 mM [U-100% 12C; U-100% 15N; U-100% 2H; U-100% 13CH3] MMP, 0.38 mM TOAC labelled in P8' position THP 90% H2O/10% D2O 6.6 ambient 299
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 800
NMR Refinement Method Details Software Rigid-body docking, Conformer selection The Collagen triple helix repeat peptide chain is homology-modeled from 4AUO. The Macrophage metalloelastase enzyme starting structure is 2poj. TopSpin
NMR Ensemble Information Conformer Selection Criteria back calculated data agree with experimental NOESY spectrum Conformers Calculated Total Number 7500 Conformers Submitted Total Number 1 Representative Model 1 (fewest violations)
Computation: NMR Software # Classification Version Software Name Author 1 collection TopSpin Bruker Biospin 2 processing TopSpin Bruker Biospin 3 chemical shift assignment Analysis CCPN 4 peak picking Analysis CCPN 5 structure solution HADDOCK 2.1 Alexandre Bonvin 6 structure solution q_test.py Stephen H. Prior 7 refinement GROMOS van Gunsteren and Berendsen 8 refinement HADDOCK 2.1 Alexandre Bonvin 9 refinement q_test.py Stephen H. Prior