1DFW
CONFORMATIONAL MAPPING OF THE N-TERMINAL SEGMENT OF SURFACTANT PROTEIN B IN LIPID USING 13C-ENHANCED FOURIER TRANSFORM INFRARED SPECTROSCOPY (FTIR)
INFRARED SPECTROSCOPY
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 13-C isotope enhanced FTIR | This structure was determined using 13-C isotope enhanced FTIR spectroscopy on a family of selectively labeled chemically synthesized peptides. 13-C carbonyl labels included residues 1,3,5,8,10,11,13,14,15,16,18,25. | Liposomes of 1-palmitoyl-2-oleoyl phosphatidylglycerol (POPG) | 10 mM phosphate | 7.4 | 1 atm | 298 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Mattson FTIR | Research Series |
NMR Refinement | ||
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Method | Details | Software |
molecular dynamics, simulated annealing | Molecular dynamics (simulated annealing) was used to generate an ensemble of conformers consistent with the FTIR data. | Winfirst |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with acceptable covalent geometry |
Conformers Calculated Total Number | 15 |
Conformers Submitted Total Number | 10 |
Representative Model | 8 (closest to the average) |
Additional NMR Experimental Information | |
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Details | 13-C isotope enhanced FTIR study. The coordinates in this entry were generated from 13-C induced spectral shifts which give residue-specific secondary structure information. |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | data analysis | Winfirst | (FTIR curve fitting software) | Kauppine et al. |
2 | refinement | Discover | 2.9.7 | Molecular Simulations, Inc. (San Diego, CA) |