Serum amyloid A protein / : / Serum amyloid A protein / Serum amyloid A proteins signature. / Serum amyloid A proteins / response to stilbenoid / high-density lipoprotein particle / acute-phase response / Serum amyloid A-2 protein
ジャーナル: Nat Commun / 年: 2022 タイトル: Cryo-EM demonstrates the in vitro proliferation of an ex vivo amyloid fibril morphology by seeding. 著者: Thomas Heerde / Matthies Rennegarbe / Alexander Biedermann / Dilan Savran / Peter B Pfeiffer / Manuel Hitzenberger / Julian Baur / Ioana Puscalau-Girtu / Martin Zacharias / Nadine Schwierz / ...著者: Thomas Heerde / Matthies Rennegarbe / Alexander Biedermann / Dilan Savran / Peter B Pfeiffer / Manuel Hitzenberger / Julian Baur / Ioana Puscalau-Girtu / Martin Zacharias / Nadine Schwierz / Christian Haupt / Matthias Schmidt / Marcus Fändrich / 要旨: Several studies showed that seeding of solutions of monomeric fibril proteins with ex vivo amyloid fibrils accelerated the kinetics of fibril formation in vitro but did not necessarily replicate the ...Several studies showed that seeding of solutions of monomeric fibril proteins with ex vivo amyloid fibrils accelerated the kinetics of fibril formation in vitro but did not necessarily replicate the seed structure. In this research we use cryo-electron microscopy and other methods to analyze the ability of serum amyloid A (SAA)1.1-derived amyloid fibrils, purified from systemic AA amyloidosis tissue, to seed solutions of recombinant SAA1.1 protein. We show that 98% of the seeded fibrils remodel the full fibril structure of the main ex vivo fibril morphology, which we used for seeding, while they are notably different from unseeded in vitro fibrils. The seeded fibrils show a similar proteinase K resistance as ex vivo fibrils and are substantially more stable to proteolytic digestion than unseeded in vitro fibrils. Our data support the view that the fibril morphology contributes to determining proteolytic stability and that pathogenic amyloid fibrils arise from proteolytic selection.
A: Serum amyloid A-2 protein B: Serum amyloid A-2 protein C: Serum amyloid A-2 protein D: Serum amyloid A-2 protein E: Serum amyloid A-2 protein F: Serum amyloid A-2 protein G: Serum amyloid A-2 protein H: Serum amyloid A-2 protein I: Serum amyloid A-2 protein J: Serum amyloid A-2 protein K: Serum amyloid A-2 protein L: Serum amyloid A-2 protein
名称: Murine serum amyloid A1 (SAA1) amyloid fibril / タイプ: COMPLEX 詳細: in vitro murine SAA amyloid fibril morphology i; Seeded with ex vivo material Entity ID: all / 由来: RECOMBINANT