Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10870019 | FEBS Letters | 2014 | 7 Pages |
Abstract
Polyglutamine tract-binding protein 1 (PQBP1) is an intrinsically disordered protein abundantly expressed in the brain. Mutations in the PQBP1 gene are causative for X-linked mental retardation disorders. Here, we investigated the structure of the C-terminal segment within the context of full-length PQBP1. We produced a segmentally isotope-labeled PQBP1 composed of a non-labeled segment (residues 1-219; N-segment) and a 13C/15N-labeled segment (residues 220-265; C-segment). Our results demonstrate that the segmental isotope-labeling combined with NMR spectroscopy is useful for detecting a very weak intra-molecular interaction in an intrinsically disordered protein.
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Authors
Yuko Nabeshima, Mineyuki Mizuguchi, Asagi Kajiyama, Hitoshi Okazawa,