Accepting its random coil nature allows a partial NMR assignment of the neuronal Tau protein |
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Authors: | Smet Caroline Leroy Arnaud Sillen Alain Wieruszeski Jean-Michel Landrieu Isabelle Lippens Guy |
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Affiliation: | CNRS--Université de Lille 2, UMR 8525, Institut Pasteur de Lille, B. P. 245, 59019 Lille, France. |
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Abstract: | A combined strategy to obtain a partial NMR assignment of the neuronal Tau protein is presented. Confronted with the extreme spectral degeneracy that the spectrum of this 441 amino acid long unstructured protein presents, we have introduced a graphical procedure based on residue type-specific product planes. Combining this strategy with the search for pairwise motifs, and combining the spectra of different Tau isoforms and even of peptides derived from the native sequence, we arrive at a partial assignment that is sufficient to map the interactions of Tau with its molecular partners. The obtained assignments equally confirm the absence of regular secondary structure in the isolated protein. |
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Keywords: | neuronal Tau protein NMR spectroscopy peptide mapping protein folding protein structures |
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