Download presentation
Presentation is loading. Please wait.
Published byBathsheba Cameron Modified over 9 years ago
1
Solution Structure Determination by NMR and Distance Geometry Calculations 1. Pure Protein (0.3 mL, 0.5 - 1 mM; ~ 10 mg) 2. Sequence-specific resonance assignments 3. Sequence-specifice distance constraints disulfide bonds spin-spin coupling constants internuclear distance constraints from NOEs residual dipolar couplings hydrogen bonds standard bond lengths; bond angles 4. Distance Geometry Calculations 5. Constrained Energy Minimization; Refinement
2
Basic Principles Nuclear Spin and Magnetization
4
Magnetization and Coherence
6
Fourier Transform NMR Ernst & Anderson Rev. Scientific Instrumentation 37: 93 (1966)
8
Nuclear Relaxation
10
Spin-Spin Coupling
11
Chemical Shift with Spin-Spin Coupling
12
1D NMR Spectrum of a Protein
13
2D Correlated SpectroscopY
14
AV-COSY
15
Nuclear Overhauser Effect (NOE) Def: The change in the intensity of resonance i upon irradiation of resonance j due to “cross relaxation” between spins i and j through space
17
2D NOESY Spectrum of a Protein
18
Some Useful 2D NMR Experiments
19
1 H- 13 C Heteronuclear Correlation Spectrum
21
Solution Structure Determination by NMR and Distance Geometry Calculations 1. Pure Protein (0.3 mL, 0.5 - 1 mM; ~ 10 mg) 2. Sequence-specific resonance assignments 3. Sequence-specifice distance constraints disulfide bonds spin-spin coupling constants internuclear distance constraints from NOEs residual dipolar couplings hydrogen bonds standard bond lengths; bond angles 4. Distance Geometry Calculations 5. Constrained Energy Minimization; Refinement
25
WR41 Protein NMR Structures C-TmZip ER14 MMP-1 IL13 FGF-2 WR90 WR64 LC8 ER115 N-TmZip JR19 ZR18 OP3 WR33 ZR31 ER75 Z-domain IR24
26
ER75: Ecol YgdK (nmr) ER30: Ecol SufE (xray) IR24: Hinf IscU (nmr) SR17 Bsub IscU (nmr) N N CC YgdK G. Liu et al. (Szyperski) Gram neg IscU IscU, SufE,YgdK Domain Families are Structurally Similar YgdK cf SufE A. Kuzin et al. (Hunt) Ramelot et al, J. Mol. Biol. 2004 Goldsmith et al., J. Mol. Biol. 2004 Liu et al. submitted T. Ramelot et al. (Kennedy) Gram pos IscU G. Kornhaber et al. (Montelione)
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.