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Florence Marie-Anaïs et al.
Traffic (Copenhagen, Denmark), 17(5), 487-499 (2016-02-06)
Phagocytosis is a mechanism used by macrophages to internalize and eliminate microorganisms or cellular debris. It relies on profound rearrangements of the actin cytoskeleton that is the driving force allowing plasma membrane extension around the particle. The closure step of
Lena Munzel et al.
Autophagy, 17(6), 1458-1478 (2020-06-10)
Coupling of Atg8 to phosphatidylethanolamine is crucial for the expansion of the crescent-shaped phagophore during cargo engulfment. Atg21, a PtdIns3P-binding beta-propeller protein, scaffolds Atg8 and its E3-like complex Atg12-Atg5-Atg16 during lipidation. The crystal structure of Atg21, in complex with the
Vibe H Oestergaard
Bio-protocol, 7(9), e2259-e2259 (2017-05-05)
During mitosis chromosomes are condensed into dense X-shaped structures that allow for microscopic determination of karyotype as well as inspection of chromosome morphology. This protocol describes a method to perform immunostaining of formaldehyde-fixed metaphase chromosomes from the avian cell line
Anete Romanauska et al.
Developmental cell, 56(18), 2562-2578 (2021-08-19)
The cell nucleus is surrounded by a double membrane. The lipid packing and viscosity of membranes is critical for their function and is tightly controlled by lipid saturation. Circuits regulating the lipid saturation of the outer nuclear membrane (ONM) and
Yanfang Chen et al.
The Journal of cell biology, 220(4) (2021-03-19)
Acute heat stress (aHS) can induce strong developmental defects in Caenorhabditis elegans larva but not lethality or sterility. This stress results in transitory fragmentation of mitochondria, formation of aggregates in the matrix, and decrease of mitochondrial respiration. Moreover, active autophagic
Agnes R Banreti et al.
Nature communications, 11(1), 2228-2228 (2020-05-08)
Cell competition is an emerging principle that eliminates suboptimal or potentially dangerous cells. For 'unfit' cells to be detected, their competitive status needs to be compared to the collective fitness of cells within a tissue. Here we report that the
Jee-Yun Park et al.
Scientific reports, 11(1), 21119-21119 (2021-10-28)
Transcription factor EB (TFEB) is a master regulator of the autophagy-lysosomal pathway (ALP). Here, we cloned a novel splicing variant of TFEB, comprising 281 amino acids (hereafter referred to as small TFEB), and lacking the helix-loop-helix (HLH) and leucine zipper
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Marie-Line Dubois et al.
Nature communications, 11(1), 1306-1306 (2020-03-13)
Pseudogenes are mutated copies of protein-coding genes that cannot be translated into proteins, but a small subset of pseudogenes has been detected at the protein level. Although ubiquitin pseudogenes represent one of the most abundant pseudogene families in many organisms
Asier Aristieta et al.
Current biology : CB, 31(4), 707-721 (2020-12-12)
The basal ganglia (BG) inhibit movements through two independent circuits: the striatal neuron-indirect and the subthalamic nucleus-hyperdirect pathways. These pathways exert opposite effects onto external globus pallidus (GPe) neurons, whose functional importance as a relay has changed drastically with the
Theodora Saridaki et al.
Journal of neurochemistry, 146(4), 474-492 (2018-05-11)
Parkinson's disease can be caused by mutations in the α-synuclein gene and is characterized by aggregates of α-synuclein protein. We have previously shown that over-expression of the small GTPase Rab7 can induce clearance of α-synuclein aggregates. In this study, we
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Alexander E Linsalata et al.
EMBO reports, 20(9), e47498-e47498 (2019-07-28)
A CGG trinucleotide repeat expansion in the 5' UTR of FMR1 causes the neurodegenerative disorder Fragile X-associated tremor/ataxia syndrome (FXTAS). This repeat supports a non-canonical mode of protein synthesis known as repeat-associated, non-AUG (RAN) translation. The mechanism underlying RAN translation
Thomas Tischer et al.
Journal of cell science, 135(2) (2021-12-09)
The control of protein abundance is a fundamental regulatory mechanism during mitosis. The anaphase-promoting complex/cyclosome (APC/C) is the main protein ubiquitin ligase responsible for the temporal regulation of mitotic progression. It has been proposed that the APC/C might fulfil other
Tripti Joshi et al.
Molecular neurobiology, 58(8), 3992-4006 (2021-04-28)
Impairment of proteostasis network is one of the characteristic features of many age-related neurodegenerative disorders including autosomal dominantly inherited Huntington's disease (HD). In HD, N-terminal portion of mutant huntingtin protein containing expanded polyglutamine repeats accumulates as inclusion bodies and leads
Rafael Mattera et al.
Molecular biology of the cell, 31(9), 963-979 (2020-02-20)
The heterotetrameric adaptor protein complex 4 (AP-4) is a component of a protein coat associated with the trans-Golgi network (TGN). Mutations in AP-4 subunits cause a complicated form of autosomal-recessive hereditary spastic paraplegia termed AP-4-deficiency syndrome. Recent studies showed that
Linda Viol et al.
The Journal of cell biology, 219(3) (2020-03-27)
Distal appendages (DAs) of the mother centriole are essential for the initial steps of ciliogenesis in G1/G0 phase of the cell cycle. DAs are released from centrosomes in mitosis by an undefined mechanism. Here, we show that specific DAs lose
Wenjing Qi et al.
Nature communications, 12(1), 1262-1262 (2021-02-26)
Multicellular organisms coordinate tissue specific responses to environmental information via both cell-autonomous and non-autonomous mechanisms. In addition to secreted ligands, recent reports implicated release of small RNAs in regulating gene expression across tissue boundaries. Here, we show that the conserved
Ryo Hatori et al.
eLife, 10 (2021-07-23)
Morphogen signaling proteins disperse across tissues to activate signal transduction in target cells. We investigated dispersion of Hedgehog (Hh), Wnt homolog Wingless (Wg), and Bone morphogenic protein homolog Decapentaplegic (Dpp) in the Drosophila wing imaginal disc. We discovered that delivery
Kartikeya Vijayasimha et al.
Cells, 10(4) (2021-05-01)
While the role of ubiquitin in protein degradation is well established, the role of other ubiquitin-like proteins (UBLs) in protein degradation is less clear. Neural precursor cell expressed developmentally down-regulated protein 8 (NEDD8) is the UBL with the highest level
Ebsy Jaimon et al.
The Journal of biological chemistry, 297(6), 101422-101422 (2021-11-20)
ARL5B, an ARF-like small GTPase localized to the trans-Golgi, is known for regulating endosome-Golgi trafficking and promoting the migration and invasion of breast cancer cells. Although a few interacting partners have been identified, the mechanism of the shuttling of ARL5B
me101 is a new allele of rad-51.
Baptiste Roelens et al.
microPublication biology, 2019 (2019-04-26)
Sascha Röth et al.
Cell chemical biology, 27(9), 1151-1163 (2020-07-16)
K-RAS is known as the most frequently mutated oncogene. However, the development of conventional K-RAS inhibitors has been extremely challenging, with a mutation-specific inhibitor reaching clinical trials only recently. Targeted proteolysis has emerged as a new modality in drug discovery
Ward W.W, et al.
Photochemistry and Photobiology, 31, 611-615 (1980)
Hoan Van Ngo et al.
Cellular microbiology, 19(11) (2017-07-27)
The bacterial surface protein InlB mediates internalisation of Listeria monocytogenes into human cells through interaction with the host receptor tyrosine kinase, Met. InlB-mediated entry requires localised polymerisation of the host actin cytoskeleton. Apart from actin polymerisation, roles for other host
J Beaudouin et al.
Cell death and differentiation, 20(4), 599-610 (2013-01-12)
Apoptosis occurs through a tightly regulated cascade of caspase activation. In the context of extrinsic apoptosis, caspase-8 is activated by dimerization inside a death receptor complex, cleaved by auto-proteolysis and subsequently released into the cytosol. This fully processed form of
Yongming Chen et al.
International journal of molecular sciences, 22(8) (2021-05-01)
The encoding genes of plant intracellular nucleotide-binding site (NBS) and leucine-rich repeat (LRR) domain receptors (NLRs) often exist in the form of a gene cluster. Several recent studies demonstrated that the truncated Toll/interleukin-1 receptor-NBS (TIR-NBS) proteins play important roles in
Xinru Wang et al.
eLife, 9 (2020-03-21)
The recruitment of substrates by the ser/thr protein phosphatase 2A (PP2A) is poorly understood, limiting our understanding of PP2A-regulated signaling. Recently, the first PP2A:B56 consensus binding motif, LxxIxE, was identified. However, most validated LxxIxE motifs bind PP2A:B56 with micromolar affinities
Christian A Cárdenas-Monroy et al.
PloS one, 12(3), e0173389-e0173389 (2017-03-09)
The mitochondrial alternative oxidase is an important enzyme that allows respiratory activity and the functioning of the Krebs cycle upon disturbance of the respiration chain. It works as a security valve in transferring excessive electrons to oxygen, thereby preventing potential
Ester Méndez et al.
Journal of cell science, 133(24) (2021-01-15)
Start is the main decision point in the eukaryotic cell cycle at which cells commit to a new round of cell division. It involves the irreversible activation of a transcriptional programme through the inactivation of Start transcriptional repressors: the retinoblastoma
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