A genetic screen identifies a lipid pathway which impacts the endoplasmic reticulum unfolded protein response and highlights a mechanism through which lipid disequilibrium might facilitate the progression of proteopathic diseases.
MCTP is a novel presynaptic calcium sensor, resident within the endoplasmic reticulum, that is required for normal baseline neurotransmission, short-term synaptic plasticity and presynaptic homeostatic plasticity.
A unique form of regulation has been observed in the unfolded protein response of S. pombe, along with a novel mechanism of post-transcriptional mRNA processing.
Andrew T Moehlman, Amanda K Casey ... Helmut Krämer
Tuning of BiP activity by Fic-mediated AMPylation is required for Drosophila photoreceptor plasticity and attenuation of the unfolded protein response.
GRAMD1 proteins sense a transient expansion of the accessible pool of plasma membrane cholesterol and facilitate its transport to the endoplasmic reticulum at ER-PM contact sites.
Astrocytic ER calcium release and gap junction communication exhibit circadian modulation driven by HERPUD1, highlighting the importance of astrocytic circadian rhythms in brain function.
Nicholas R Guydosh, Philipp Kimmig ... Rachel Green
A critical component of the cellular response to unfolded proteins is the widespread rescue of ribosomes that stall on endonucleolytically-cleaved mRNA transcripts.