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Università della Svizzera italiana

Endoplasmic reticulum and lysosomal quality control of four nonsense mutants of iduronate 2-sulfatase linked to Hunter’s syndrome

Marazza, Alessandro ; Galli, Carmela ; Fasana, Elisa ; Sgrignani, Jacopo ; Burda, Patricie ; Enrico M. A. Fassi ; Matthias Baumgartner ; Andrea Cavalli ; Maurizio Molinari

In: DNA and cell biology

Hunter’s syndrome (mucopolysaccharidosis type II) is a rare X-linked lysosomal storage disorder caused by mutations in the iduronate 2-sulfatase (IDS) gene. Motivated by the case of a child affected by this syndrome, we compared the intracellular fate of wild type IDS (IDSWT) and of four nonsense mutations of IDS (IDSL482X, IDSY452X, IDSR443X and IDSW337X) generating progressively shorter ...

Università della Svizzera italiana

A selective ER‐phagy exerts procollagen quality control via a Calnexin‐FAM134B complex

Forrester, Alison ; Leonibus, Chiara De ; Grumati, Paolo ; Fasana, Elisa ; Piemontese, Marilina ; Staiano, Leopoldo ; Fregno, Ilaria ; Raimondi, Andrea ; Marazza, Alessandro ; Bruno, Gemma ; Iavazzo, Maria ; Intartaglia, Daniela ; Seczynska, Marta ; van Anken, Eelco ; Conte, Ivan ; De Matteis, Maria Antonietta ; Dikic, Ivan ; Molinari, Maurizio ; Settembre, Carmine

In: The EMBO Journal, 2019, vol. 38, no. 2, p. e99847

Autophagy is a cytosolic quality control process that recognizes substrates through receptor‐mediated mechanisms. Procollagens, the most abundant gene products in Metazoa, are synthesized in the endoplasmic reticulum (ER), and a fraction that fails to attain the native structure is cleared by autophagy. However, how autophagy selectively recognizes misfolded procollagens in the ER lumen is...

2 results 1