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Kwang Hoon Sung et al.
Biochemical and biophysical research communications, 453(3), 642-647 (2014-10-12)
When mRNAs lack stop codons, errors in gene expression and coding of aberrant proteins that are harmful in cells can result. In Saccharomyces cerevisiae, a 180-kDa E3-ubiquitin ligase, Ltn1 has been known to associate with ribosomes and marks translationally-arrested aberrant
Justin S Becker et al.
Molecular cell, 68(6), 1023-1037 (2017-12-23)
Heterochromatin is integral to cell identity maintenance by impeding the activation of genes for alternate cell fates. Heterochromatic regions are associated with histone 3 lysine 9 trimethylation (H3K9me3) or H3K27me3, but these modifications are also found in euchromatic regions that
Cristina Henriques et al.
Parasites & vectors, 8, 346-346 (2015-06-26)
Trypanosoma cruzi, the etiological agent of Chagas disease, is auxotrophic for arginine. It obtains this amino acid from the host through transporters expressed on the plasma membrane and on the membranes of intracellular compartments. A few cationic amino acid transporters
Bruce A Pfeffer et al.
Experimental eye research, 161, 17-29 (2017-06-03)
A duplex fluorescence assay to assess the viability of cells cultured in multi-well plates is described, which can be carried out in the original culture plate using a plate reader, without exchanges of culture or assay medium, or transfer of
Eduardo Balsa et al.
Molecular cell, 74(5), 877-890 (2019-04-27)
Endoplasmic reticulum (ER) stress and unfolded protein response are energetically challenging under nutrient stress conditions. However, the regulatory mechanisms that control the energetic demand under nutrient and ER stress are largely unknown. Here we show that ER stress and glucose
Bartosz Kazłowski et al.
Carbohydrate polymers, 122, 351-358 (2015-03-31)
A series of neoagaro-oligosaccharides (NAOS) were prepared by β-agarase digestion and agaro-oligosaccharides (AOS) by HCl hydrolysis from agarose with defined quantity and degree of polymerization (DP). Chain-length distribution in the crude product mixtures were monitored by two high performance anion
Ana M Brokate-Llanos et al.
Genetics, 198(4), 1559-1569 (2014-10-10)
Type III galactosemia is a metabolic disorder caused by reduced activity of UDP-galactose-4-epimerase, which participates in galactose metabolism and the generation of various UDP-sugar species. We characterized gale-1 in Caenorhabditis elegans and found that a complete loss-of-function mutation is lethal
Yuvabharath Kondaveeti et al.
Cancer letters, 364(1), 44-58 (2015-04-29)
Epithelial-mesenchymal transition (EMT) induces invasive properties in epithelial tumors and promotes metastasis. Although EMT-mediated cellular and molecular changes are well understood, very little is known about EMT-induced metabolic changes. HER2-positive BT-474 breast cancer cells were induced to undergo a stable
Qing Wang et al.
Analytica chimica acta, 854, 191-201 (2014-12-07)
A hydrophilic stationary phase (SP) was prepared through grafting N-methylene phosphonic acid chitosan on magnesia-zirconia particles (P-CTS-MgO-ZrO2) via Lewis acid-base interaction. The resulting material was characterized by thermogravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscope and nitrogen adsorption analysis.
Dan Li et al.
PloS one, 10(3), e0118284-e0118284 (2015-03-05)
Mammary gland development is controlled by several genes. Although miRNAs have been implicated in mammary gland function, the mechanism by which miR-486 regulates mammary gland development and lactation remains unclear. We investigated miR-486 expression in cow mammary gland using qRT-PCR
Dong Jun Park et al.
International journal of molecular sciences, 21(19) (2020-10-01)
Age-related hearing loss (ARHL) is the most common sensory disorder among the elderly, associated with aging and auditory hair cell death due to oxidative-stress-induced mitochondrial dysfunction. Although transgenic mice and long-term aging induction cultures have been used to study ARHL
Amandine Bonnet et al.
Nucleic acids research, 43(8), 4249-4261 (2015-04-08)
Several nuclear pore-associated factors, including the SUMO-protease Ulp1, have been proposed to prevent the export of intron-containing messenger ribonucleoparticles (mRNPs) in yeast. However, the molecular mechanisms of this nuclear pore-dependent mRNA quality control, including the sumoylated targets of Ulp1, have
Marta Riba et al.
Frontiers in immunology, 12, 618193-618193 (2021-07-16)
Corpora amylacea (CA) in the human brain are polyglucosan bodies that accumulate residual substances originated from aging and both neurodegenerative and infectious processes. These structures, which act as waste containers, are released from the brain to the cerebrospinal fluid, reach
Tristan Cerisy et al.
Journal of bacteriology, 201(15) (2019-05-22)
The mechanisms by which bacteria uptake solutes across the cell membrane broadly impact their cellular energetics. Here, we use functional genomic, genetic, and biophysical approaches to reveal how Clostridium (Lachnoclostridium) phytofermentans, a model bacterium that ferments lignocellulosic biomass, uptakes plant
Li Feng et al.
Oncotarget, 6(36), 39151-39164 (2015-10-17)
MicroRNAs (miRNAs) regulate disease-relevant metabolic pathways. However, most current pathway identification methods fail to consider miRNAs in addition to genes when analyzing pathways. We developed a powerful method called Subpathway-GMir to construct miRNA-regulated metabolic pathways and to identify miRNA-mediated subpathways
Lovemore Nkhata Malunga et al.
Food chemistry, 167, 311-319 (2014-08-26)
The effect of xylanase type (Trichoderma viride or Neocallimastix patriciarum) and graded ethanol fractionation on the antioxidant capacity (AOC) of arabinoxylan oligosaccharides (AXOS) obtained from wheat aleurone was investigated. AXOS yields were higher using N. patriciarum (62%) than T. viride
Anne Lisa Mitter et al.
Autophagy, 15(6), 1031-1050 (2019-01-29)
Macroautophagy/autophagy is a highly conserved intracellular vesicle transport pathway that prevents accumulation of harmful materials within cells. The dynamic assembly and disassembly of the different autophagic protein complexes at the so-called phagophore assembly site (PAS) is strictly regulated. Rab GTPases
Chad Slawson et al.
Molecular biology of the cell, 19(10), 4130-4140 (2008-07-26)
O-linked beta-N-acetylglucosamine (O-GlcNAc) is a highly dynamic intracellular protein modification responsive to stress, hormones, nutrients, and cell cycle stage. Alterations in O-GlcNAc addition or removal (cycling) impair cell cycle progression and cytokinesis, but the mechanisms are not well understood. Here
Paulina Chávez-Hurtado et al.
Journal of medicinal food, 23(5), 515-522 (2019-10-31)
Aging is associated with detrimental cellular and cognitive changes, making it an important public health concern; yet, many of these changes may be influenced by nutritional interventions. The natural sesquiterpene β-caryophyllene (BCP) has anti-inflammatory and antioxidant effects that are mediated
Imen Lassadi et al.
PLoS computational biology, 11(6), e1004306-e1004306 (2015-06-02)
Inherently dynamic, chromosomes adopt many different conformations in response to DNA metabolism. Models of chromosome organization in the yeast nucleus obtained from genome-wide chromosome conformation data or biophysical simulations provide important insights into the average behavior but fail to reveal
Luke E Formosa et al.
Proceedings of the National Academy of Sciences of the United States of America, 118(17) (2021-04-22)
Mitochondrial disease is a debilitating condition with a diverse genetic etiology. Here, we report that TMEM126A, a protein that is mutated in patients with autosomal-recessive optic atrophy, participates directly in the assembly of mitochondrial complex I. Using a combination of
Rachel S Lane et al.
Arthritis research & therapy, 17, 54-54 (2015-04-19)
Chondrocytes rely primarily on glycolysis to meet cellular energy needs, but recent studies implicate impaired mitochondrial function in osteoarthritis (OA) pathogenesis. Our objectives were to investigate the ability of chondrocytes to upregulate mitochondrial respiration when challenged with a nutrient stress
Karunya Srinivasan et al.
Journal of biomolecular screening, 20(6), 768-778 (2015-04-09)
Fidelity of glycan structures is a key requirement for biotherapeutics, with carbohydrates playing an important role for therapeutic efficacy. Comprehensive glycan profiling techniques such as liquid chromatography (LC) and mass spectrometry (MS), while providing detailed description of glycan structures, require
Guan-Ming Qi et al.
Endocrinology, 155(6), 2254-2265 (2014-04-02)
Previous studies have indicated that adiponectin (APN) protects against cardiac remodeling, but the underlying mechanism remains unclear. The present study aimed to elucidate how APN regulates inflammatory responses and cardiac fibrosis in response to angiotensin II (Ang II). Male APN
Yan-Fang Xian et al.
Neurochemistry international, 76, 42-49 (2014-07-02)
Isorhynchophylline (IRN), an alkaloid isolated from Uncaria rhynchophylla, has been reported to improve cognitive impairment induced by beta-amyloid in rats. However, whether IRN could also ameliorate the D-galactose (D-gal)-induced mouse memory deficits is still not clear. In the present study
Renan Escalante-Chong et al.
Proceedings of the National Academy of Sciences of the United States of America, 112(5), 1636-1641 (2015-01-22)
Natural environments are filled with multiple, often competing, signals. In contrast, biological systems are often studied in "well-controlled" environments where only a single input is varied, potentially missing important interactions between signals. Catabolite repression of galactose by glucose is one
Senlian Hong et al.
Cell chemical biology, 27(9), 1140-1150 (2020-07-11)
Wnt/β-catenin signaling regulates critical, context-dependent transcription in numerous physiological events. Among the well-documented mechanisms affecting Wnt/β-catenin activity, modification of N-glycans by L-fucose is the newest and the least understood. Using a combination of Chinese hamster ovary cell mutants with different
Lorenz Gerber et al.
The New phytologist, 203(4), 1220-1230 (2014-06-13)
The biosynthesis of wood in aspen (Populus) depends on the metabolism of sucrose, which is the main transported form of carbon from source tissues. The largest fraction of the wood biomass is cellulose, which is synthesized from UDP-glucose. Sucrose synthase
Jun Liu et al.
International journal of biological macromolecules, 72, 1182-1190 (2014-09-27)
Optimization of extraction conditions, preliminary characterization and in vitro antioxidant activity of polysaccharides from black soybean (BSPS) were investigated. The results of Box-Behnken design showed that the optimal extraction conditions for BSPS were as follows: ratio of water to material
Ana Maranha et al.
Scientific reports, 5, 13610-13610 (2015-09-02)
Mycobacteria synthesize unique intracellular methylglucose lipopolysaccharides (MGLP) proposed to modulate fatty acid metabolism. In addition to the partial esterification of glucose or methylglucose units with short-chain fatty acids, octanoate was invariably detected on the MGLP reducing end. We have identified
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