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Université de Fribourg

Tissue-specific isoforms of the single C. elegans Ryanodine receptor gene unc-68 control specific functions

Marques, Filipe ; Thapliyal, Saurabh ; Javer, Avelino ; Shrestha, Priyanka ; Brown, André E. X. ; Glauser, Dominique A.

In: PLOS Genetics, 2020, vol. 16, no. 10, p. e1009102

Ryanodine receptors (RyR) are essential regulators of cellular calcium homeostasis and signaling. Vertebrate genomes contain multiple RyR gene isoforms, expressed in different tissues and executing different functions. In contrast, invertebrate genomes contain a single RyR-encoding gene and it has long been proposed that different transcripts generated by alternative splicing may diversify...

Université de Fribourg

Proteasomal degradation induced by DPP9-mediated processing competes with mitochondrial protein import

Finger, Yannik ; Habich, Markus ; Gerlich, Sarah ; Urbanczyk, Sophia ; Logt, Erik ; Koch, Julian ; Schu, Laura ; Lapacz, Kim Jasmin ; Ali, Muna ; Petrungaro, Carmelina ; Salscheider, Silja Lucia ; Pichlo, Christian ; Baumann, Ulrich ; Mielenz, Dirk ; Dengjel, Jörn ; Brachvogel, Bent ; Hofmann, Kay ; Riemer, Jan

In: The EMBO Journal, 2020, vol. 39, no. 19, p. e103889

Plasticity of the proteome is critical to adapt to varying conditions. Control of mitochondrial protein import contributes to this plasticity. Here, we identified a pathway that regulates mitochondrial protein import by regulated N-terminal processing. We demonstrate that dipeptidyl peptidases 8/9 (DPP8/9) mediate the N-terminal processing of adenylate kinase 2 (AK2) en route to mitochondria....

Université de Fribourg

Mitochondrial sphingosine-1-phosphate lyase is essential for phosphatidylethanolamine synthesis and survival of Trypanosoma brucei

Dawoody Nejad, Ladan ; Stumpe, Michael ; Rauch, Monika ; Hemphill, Andrew ; Schneiter, Roger ; Bütikofer, Peter ; Serricchio, Mauro

In: Scientific Reports, 2020, vol. 10, no. 1, p. 8268

Sphingosine-1-phosphate is a signaling molecule involved in the control of cell migration, differentiation, survival and other physiological processes. This sphingolipid metabolite can be degraded by the action of sphingosine-1-phosphate lyase (SPL) to form hexadecenal and ethanolamine phosphate. The importance of SPL-mediated ethanolamine phosphate formation has been characterized in only...

Consortium of Swiss Academic Libraries

Cis - trans interactions of cell surface receptors: biological roles and structural basis

Held, Werner ; Mariuzza, Roy

In: Cellular and Molecular Life Sciences, 2011, vol. 68, no. 21, p. 3469-3478