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Madreiter-Sokolowski, C.T.* ; Klec, C.* ; Parichatikanond, W.* ; Stryeck, S.* ; Gottschalk, B.* ; Pulido, S.* ; Rost, R.* ; Eroglu, E.* ; Hofmann, N.A.* ; Bondarenko, A.I.* ; Madl, T. ; Waldeck-Weiermair, M.* ; Malli, R.* ; Graier, W.F.*

PRMT1-mediated methylation of MICU1 determines the UCP2/3 dependency of mitochondrial Ca2+ uptake in immortalized cells.

Nat. Commun. 7:12897 (2016)
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Recent studies revealed that mitochondrial Ca2+ channels, which control energy flow, cell signalling and death, are macromolecular complexes that basically consist of the pore-forming mitochondrial Ca2+ uniporter (MCU) protein, the essential MCU regulator (EMRE), and the mitochondrial Ca2+ uptake 1 (MICU1). MICU1 is a regulatory subunit that shields mitochondria from Ca2+ overload. Before the identification of these core elements, the novel uncoupling proteins 2 and 3 (UCP2/3) have been shown to be fundamental for mitochondrial Ca2+ uptake. Here we clarify the molecular mechanism that determines the UCP2/3 dependency of mitochondrial Ca2+ uptake. Our data demonstrate that mitochondrial Ca2+ uptake is controlled by protein arginine methyl transferase 1 (PRMT1) that asymmetrically methylates MICU1, resulting in decreased Ca2+ sensitivity. UCP2/3 normalize Ca2+ sensitivity of methylated MICU1 and, thus, re-establish mitochondrial Ca2+ uptake activity. These data provide novel insights in the complex regulation of the mitochondrial Ca2+ uniporter by PRMT1 and UCP2/3.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Protein Arginine Methyltransferases; Calcium Uniporter; Essential Component; Oxidative Stress; Breast-cancer; Mcu; Complex; Expression; Membrane; Binding
Sprache deutsch
Veröffentlichungsjahr 2016
HGF-Berichtsjahr 2016
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Zeitschrift Nature Communications
Quellenangaben Band: 7, Heft: , Seiten: , Artikelnummer: 12897 Supplement: ,
Verlag Nature Publishing Group
Verlagsort London
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Structural Biology (STB)
POF Topic(s) 30505 - New Technologies for Biomedical Discoveries
Forschungsfeld(er) Enabling and Novel Technologies
PSP-Element(e) G-552800-001
DOI 10.1038/ncomms12897
WOS ID WOS:000385387100001
Scopus ID 84988474788
Erfassungsdatum 2016-10-13
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