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Full-Text Articles in Medical Molecular Biology
Mistranslating Trnas Alter The Heat Shock Activation By Hsf1, Rebecca Dib
Mistranslating Trnas Alter The Heat Shock Activation By Hsf1, Rebecca Dib
Undergraduate Student Research Internships Conference
Translation, or the production of protein from an mRNA blueprint, is among the most fundamental processes to life as we know it. tRNAs are essential to accurate translation, as they decode the codons of mRNA and recruit corresponding amino acids. Variant tRNAs with anticodon mutations can decrease translational fidelity by recruiting the incorrect amino acid, an aberrant process known as mistranslation. When proteins are produced with incorrect amino acid sequences, they may misfold. The heat shock response functions to alleviate cellular stress caused by misfolded proteins, either by refolding or targeting misfolded proteins for degradation. Hsf1 acts as a transcriptional …
Regulating Phase Transition In Neurodegenerative Diseases By Nuclear Import Receptors, Amandeep Girdhar, Lin Guo
Regulating Phase Transition In Neurodegenerative Diseases By Nuclear Import Receptors, Amandeep Girdhar, Lin Guo
Department of Biochemistry and Molecular Biology Faculty Papers
RNA-binding proteins (RBPs) with a low-complexity prion-like domain (PLD) can undergo aberrant phase transitions and have been implicated in neurodegenerative diseases such as ALS and FTD. Several nuclear RBPs mislocalize to cytoplasmic inclusions in disease conditions. Impairment in nucleocytoplasmic transport is another major event observed in ageing and in neurodegenerative disorders. Nuclear import receptors (NIRs) regulate the nucleocytoplasmic transport of different RBPs bearing a nuclear localization signal by restoring their nuclear localization. NIRs can also specifically dissolve or prevent the aggregation and liquid–liquid phase separation of wild-type or disease-linked mutant RBPs, due to their chaperoning activity. This review focuses on …
Liquid-Liquid Phase Separation Of Tdp-43 And Fus In Physiology And Pathology Of Neurodegenerative Diseases, Jenny L Carey, Lin Guo
Liquid-Liquid Phase Separation Of Tdp-43 And Fus In Physiology And Pathology Of Neurodegenerative Diseases, Jenny L Carey, Lin Guo
Department of Biochemistry and Molecular Biology Faculty Papers
Liquid-liquid phase separation of RNA-binding proteins mediates the formation of numerous membraneless organelles with essential cellular function. However, aberrant phase transition of these proteins leads to the formation of insoluble protein aggregates, which are pathological hallmarks of neurodegenerative diseases including ALS and FTD. TDP-43 and FUS are two such RNA-binding proteins that mislocalize and aggregate in patients of ALS and FTD. They have similar domain structures that provide multivalent interactions driving their phase separation in vitro and in the cellular environment. In this article, we review the factors that mediate and regulate phase separation of TDP-43 and FUS. We also …