The essential functions of molecular chaperones and folding enzymes in maintaining endoplasmic reticulum homeostasis

LM Hendershot, TM Buck, JL Brodsky - Journal of Molecular Biology, 2023 - Elsevier
It has been estimated that up to one-third of the proteins encoded by the human genome
enter the endoplasmic reticulum (ER) as extended polypeptide chains where they undergo …

Legionella maintains host cell ubiquitin homeostasis by effectors with unique catalytic mechanisms

J Fu, S Li, H Guan, C Li, YB Zhao, TT Chen… - Nature …, 2024 - nature.com
The intracellular bacterial pathogen Legionella pneumophila modulates host cell functions
by secreting multiple effectors with diverse biochemical activities. In particular, effectors of …

Infancy‐onset diabetes caused by de‐regulated AMPylation of the human endoplasmic reticulum chaperone BiP

LA Perera, AT Hattersley, HP Harding… - EMBO Molecular …, 2023 - embopress.org
Dysfunction of the endoplasmic reticulum (ER) in insulin‐producing beta cells results in cell
loss and diabetes mellitus. Here we report on five individuals from three different …

FicD sensitizes cellular response to glucose fluctuations in mouse embryonic fibroblasts

B Gulen, A Blevins, LN Kinch, KA Servage… - Proceedings of the …, 2024 - pnas.org
During homeostasis, the endoplasmic reticulum (ER) maintains productive transmembrane
and secretory protein folding that is vital for proper cellular function. The ER-resident HSP70 …

Protein feature engineering framework for AMPylation site prediction

H Prabhu, H Bhosale, A Sane, R Dhadwal… - Scientific Reports, 2024 - nature.com
AMPylation is a biologically significant yet understudied post-translational modification
where an adenosine monophosphate (AMP) group is added to Tyrosine and Threonine …

FicD regulates adaptation to the unfolded protein response in the murine liver

AK Casey, NM Stewart, N Zaidi, HF Gray, A Cox… - Biochimie, 2024 - Elsevier
The unfolded protein response (UPR) is a cellular stress response that is activated when
misfolded proteins accumulate in the endoplasmic reticulum (ER). Regulation of the UPR …

[HTML][HTML] Hepatic Transcriptomics of Broilers with Low and High Feed Conversion in Response to Caloric Restriction

AO Omotoso, H Reyer, M Oster, S Ponsuksili… - …, 2024 - pmc.ncbi.nlm.nih.gov
Background: In broiler chickens, the efficient utilization of macro-and micronutrients is
influenced by various metabolic pathways that are closely linked to feed efficiency (FE), a …

Legionella maintains host cell ubiquitin homeostasis by effectors with unique catalytic mechanisms

J Fu, S Li, H Guan, C Li, TT Chen, W Xian… - Research …, 2024 - pmc.ncbi.nlm.nih.gov
The reversal of ubiquitination induced by members of the SidE effector family of Legionella
pneumophila produces phosphoribosyl ubiquitin (PR-Ub) that is potentially detrimental to …

Small molecule FICD inhibitors suppress endogenous and pathologic FICD-mediated protein AMPylation

BK Chatterjee, M Alam, A Chakravorty, SM Lacy… - …, 2024 - pmc.ncbi.nlm.nih.gov
The AMP transferase, FICD, is an emerging drug target finetuning stress signaling in the
endoplasmic reticulum (ER). FICD is a bi-functional enzyme, catalyzing both AMP addition …

FICD deficiency protects mice from hypertrophy-induced heart failure via BiP-mediated activation of the UPRER and ER-phagy

SM Lacy, RJ Taubitz, ND Urban, SN Turowski… - bioRxiv, 2024 - biorxiv.org
Cardiomyocytes require the HSP70 chaperone BiP to maintain proteostasis in the
endoplasmic reticulum (ER) following cardiac stress. The adenylyl transferase (AMPylase) …