The beta-slip: a novel concept in transthyretin amyloidosis.Eneqvist, T., Andersson, K., Olofsson, A., Lundgren, E., Sauer-Eriksson, A.E.
(2000) Mol.Cell 6: 1207-1218
- PubMed: 11106758
- Also Cited By: 2QEL
- PubMed Abstract:
- The "edge strand" Hypothesis: Prediction and Test of a Mutational "hot-spot" on the Transthyretin Molecule Associated with FAP Amyloidogenesis
Serpell, L.C.,Goldsteins, G.,Dacklin, I.,Lundgren, E.,Blake, C.C.F.
(1996) Amyloid 3: 75
- A Comparative Analysis of 23 Structures of the Amyloidogenic Protein Transthyretin
Hornberg, A.,Eneqvist, T.,Olofsson, A.,Lundgren, E.
(2000) J.Mol.Biol. 302: 649
- Characterization of Two Highly Amyloidogenic Mutants of Transthyretin
Goldsteins, G.,Andersson, K.,Olofsson, A.,Dacklin, I.,Edvinsson, A.,Baranov, V.,Sandgren, O.,Thylen, C.,Hammarstrom, S.,Lundgren, E.
(1997) Biochemistry 36: 5346
Transthyretin is a tetrameric plasma protein associated with two forms of amyloid disease. The structure of the highly amyloidogenic transthyretin triple mutant TTRG53S/E54D/L55S determined at 2.3 A resolution reveals a novel conformation: the beta-s ...
Transthyretin is a tetrameric plasma protein associated with two forms of amyloid disease. The structure of the highly amyloidogenic transthyretin triple mutant TTRG53S/E54D/L55S determined at 2.3 A resolution reveals a novel conformation: the beta-slip. A three-residue shift in beta strand D places Leu-58 at the position normally occupied by Leu-55 now mutated to serine. The beta-slip is best defined in two of the four monomers, where it makes new protein-protein interactions to an area normally involved in complex formation with retinol-binding protein. This interaction creates unique packing arrangements, where two protein helices combine to form a double helix in agreement with fiber diffraction and electron microscopy data. Based on these findings, a novel model for transthyretin amyloid formation is presented.
Umea Center for Molecular Pathogenesis Umea University S-901 87, Umea, Sweden.