Details

Autor(en) / Beteiligte

• Varani, Luca
• Hasegawa, Masato
• Spillantini, Maria Grazia
• Smith, Michael J.
• Murrell, Jill R.
• Ghetti, Bernardino
• Klug, Aaron
• Goedert, Michel
• Varani, Gabriele

Titel

Structure of Tau Exon 10 Splicing Regulatory Element RNA and Destabilization by Mutations of Frontotemporal Dementia and Parkinsonism Linked to Chromosome 17

Ist Teil von

• Proceedings of the National Academy of Sciences - PNAS, 1999-07, Vol.96 (14), p.8229-8234

Ort / Verlag

United States: National Academy of Sciences of the United States of America

Erscheinungsjahr

1999

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Coding region and intronic mutations in the tau gene cause frontotemporal dementia and parkinsonism linked to chromosome 17. Intronic mutations and some missense mutations increase splicing in of exon 10, leading to an increased ratio of four-repeat to three-repeat tau isoforms. Secondary structure predictions have led to the proposal that intronic mutations and one missense mutation destabilize a putative RNA stem-loop structure located close to the splice-donor site of the intron after exon 10. We have determined the three-dimensional structure of this tau exon 10 splicing regulatory element RNA by NMR spectroscopy. We show that it forms a stable, folded stem-loop structure whose thermodynamic stability is reduced by frontotemporal dementia and parkinsonism linked to chromosome 17 mutations and increased by compensatory mutations. By exon trapping, the reduction in thermodynamic stability is correlated with increased splicing in of exon 10.