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Advanced approaches for the characterization of a de novo designed antiparallel coiled coil peptide

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Pagel, K.; Seeger, K.; Seiwert, B.; Villa, A.; Mark, A.E.; Berger, S.; Koksch, B. – 2005

We report here an advanced approach for the characterization of the folding pattern of a de novo designed antiparallel coiled coil peptide by high-resolution methods. Incorporation of two fluorescence labels at the C- and N-terminus of the peptide chain as well as modification of two hydrophobic core positions by Phe/[15N,13C]Leu enable the study of the folding characteristics and of distinct amino acid side chain interactions by fluorescence resonance energy transfer (FRET) and NMR spectroscopy. Results of both experiments reveal the antiparallel alignment of the helices and thus prove the design concept. This finding is also supported by molecular dynamics simulations. Electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICR-MS) in combination with NMR experiments was used for verification of the oligomerization equilibria of the coiled coil peptide.

Title
Advanced approaches for the characterization of a de novo designed antiparallel coiled coil peptide
Author
Pagel, K.; Seeger, K.; Seiwert, B.; Villa, A.; Mark, A.E.; Berger, S.; Koksch, B.
Date
2005
Identifier
10.1039/B418167K
Source(s)
Citation
Org. Biomol. Chem. 2005, 3, 1189-1194
Type
Text

Cover picture: Org. Biomol. Chem. 2005, 3 (7).

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