Several metals have toxic actions on nerve cells and neurobehavioral functioning playing a role in the genesis and development of many neurodegenerative diseases. In particular manganese(II) is a well known neurotoxic metal as it accumulates in basal ganglia inducing Manganism, a pathology with common manifestations with Parkinson's disease [1]. YPK9 gene (Yeast PARK9; also known as YOR291W) encoded protein can protect cells from manganese poisoning [2]. In fact YPK9 is a non-essential yeast gene predicted by sequence to encode a transmembrane P-type transport ATPase involved in metal coordination and transportation. Mutations in the human homolog of YPK9, ATP13A2/PARK9, have been linked to genetic forms of early onset Parkinsonism. We tested the binding ability of Mn(II) and other divalent metal ions (Cu(II), Zn(II), Ni(II)) with several peptide sequences from YPK9 with particular focus on highly conserved sequences from yeast to human. The work was carried out at different pH values and ligand/metal molar ratios by means of potentiometric and spectroscopic techniques (multidimensional and heteronuclear NMR and UV-visible), in order to evaluate and compare the coordination propensity of such fragments with Mn(II) and the other metal probes selected, with the purpose of sheding a light on the protective properties of YPK9 in Manganese-induced Parkinsonism [3-5].
Manganism: the role of YPK9 protein / Zoroddu, Maria Antonietta; Peana, Massimiliano Francesco; Medici, Serenella; Remelli, Maurizio. - (2014), pp. 191-191. (Intervento presentato al convegno ICCC41: 41. International Conference on Coordination Chemistry tenutosi a Singapore nel 21-24 Luglio 2014).
Manganism: the role of YPK9 protein
ZORODDU, Maria Antonietta;PEANA, Massimiliano Francesco;MEDICI, Serenella;
2014-01-01
Abstract
Several metals have toxic actions on nerve cells and neurobehavioral functioning playing a role in the genesis and development of many neurodegenerative diseases. In particular manganese(II) is a well known neurotoxic metal as it accumulates in basal ganglia inducing Manganism, a pathology with common manifestations with Parkinson's disease [1]. YPK9 gene (Yeast PARK9; also known as YOR291W) encoded protein can protect cells from manganese poisoning [2]. In fact YPK9 is a non-essential yeast gene predicted by sequence to encode a transmembrane P-type transport ATPase involved in metal coordination and transportation. Mutations in the human homolog of YPK9, ATP13A2/PARK9, have been linked to genetic forms of early onset Parkinsonism. We tested the binding ability of Mn(II) and other divalent metal ions (Cu(II), Zn(II), Ni(II)) with several peptide sequences from YPK9 with particular focus on highly conserved sequences from yeast to human. The work was carried out at different pH values and ligand/metal molar ratios by means of potentiometric and spectroscopic techniques (multidimensional and heteronuclear NMR and UV-visible), in order to evaluate and compare the coordination propensity of such fragments with Mn(II) and the other metal probes selected, with the purpose of sheding a light on the protective properties of YPK9 in Manganese-induced Parkinsonism [3-5].File | Dimensione | Formato | |
---|---|---|---|
Zoroddu_M_Manganism_role_of_YPK9.pdf
non disponibili
Tipologia:
Versione editoriale (versione finale pubblicata)
Licenza:
Non specificato
Dimensione
185.95 kB
Formato
Adobe PDF
|
185.95 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.