AutoriVilasi, Silvia; Carrotta, Rita; Mangione, Maria Rosalia; Campanella, Claudia; Librizzi, Fabio; Randazzo, Loredana; Martorana, Vincenzo; Gammazza, Antonella Marino; Ortore, Maria Grazia; Vilasi, Annalisa; Pocsfalvi, Gabriella; Burgio, Giosalba; Corona, Dav
AbstractIt has been established that Hsp60 can accumulate in the cytosol in various pathological conditions, including cancer and chronic inflammatory diseases. Part or all of the cytosolic Hsp60 could be naive, namely, bear the mitochondrial import signal (MIS), but neither the structure nor the in solution oligomeric organization of this cytosolic molecule has still been elucidated. Here we present a detailed study of the structure and self-organization of naive cytosolic Hsp60 in solution. Results were obtained by different biophysical methods (light and X ray scattering, single molecule spectroscopy and hydrodynamics) that all together allowed us to assay a wide range of concentrations of Hsp60. We found that Naive Hsp60 in aqueous solution is assembled in very stable heptamers and tetradecamers at all concentrations assayed, without any trace of monomer presence.
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Autori IBFDonatella BULONE, Pier Luigi SAN BIAGIO, Vincenzo MARTORANA, Rita CARROTTA, Maria Rosalia MANGIONE, Silvia VILASI, Fabio LIBRIZZI, Antonio PICCIONELLO PALUMBO, Loredana Antonella RANDAZZO, Francesco CAPPELLO
Linee di Ricerca IBFMD.P01.002.001