Université de Fribourg

Retromer and TBC1D5 maintain late endosomal RAB7 domains to enable amino acid–induced mTORC1 signaling

Kvainickas, Arunas ; Nägele, Heike ; Qi, Wenjing ; Dokládal, Ladislav ; Jimenez-Orgaz, Ana ; Stehl, Luca ; Gangurde, Dipak ; Zhao, Qian ; Hu, Zehan ; Dengjel, Jörn ; Virgilio, Claudio De ; Baumeister, Ralf ; Steinberg, Florian

In: The Journal of Cell Biology, 2019, vol. 218, no. 9, p. 3019–3038

Retromer is an evolutionarily conserved multiprotein complex that orchestrates the endocytic recycling of integral membrane proteins. Here, we demonstrate that retromer is also required to maintain lysosomal amino acid signaling through mTORC1 across species. Without retromer, amino acids no longer stimulate mTORC1 translocation to the lysosomal membrane, which leads to a loss of mTORC1...

Université de Fribourg

An armadillo-domain protein participates in a telomerase interaction network

Dokládal, Ladislav ; Benková, Eva ; Honys, David ; Dup?áková, Nikoleta ; Lee, Lan-Ying ; Gelvin, Stanton B. ; Sýkorová, Eva

In: Plant Molecular Biology, 2018, vol. 97, no. 4, p. 407–420

Key messageArabidopsis and human ARM protein interact with telomerase. Deregulated mRNA levels of DNA repair and ribosomal protein genes in an Arabidopsis arm mutant suggest non-telomeric ARM function. The human homolog ARMC6 interacts with hTRF2.AbstractTelomerase maintains telomeres and has proposed non-telomeric functions. We previously identified interaction of the C- terminal domain of...