late Here are the latest sustainable construction materials By inhabitat.com Published On :: Mon, 14 Aug 2023 17:30:00 +0000 According to the U.N. Environmental Program, the construction industry is not making enough efforts to achieve net-zero emissions. While all sectors are making efforts to cut greenhouse gas emissions, the construction sector is still to get an organized strategy. Today, up to 50% of the world's climate change is caused by the construction sector. The same industry is responsible for up to 40% of the pollution in water bodies. These figures just go to show, how significant the construction industry is in regards to environmental impact.[...] Full Article Design construction Sustainable Construction construction materials Design
late ANTI-ABSINTHE POSTER, CIRCA 1885 (TRANSLATED FROM THE ORIGINAL FRENCH) By cheezburger.com Published On :: Mon, 03 May 2010 06:31:03 -0700 Full Article drugs painting
late Spring cleaning is time to throw out those children that have accumulated over the winter By cheezburger.com Published On :: Wed, 02 Jan 2013 19:54:43 -0800 Full Article pool children
late Wk3/4: Better late than dead By www.aquarionics.com Published On :: Sun, 24 Jan 2021 22:52:18 +0000 The difficulty of this weeknotes things is that entire weeks can go by without anything interesting happening. That’s… Full Article Uncategorized
late X is the latest social media site letting 3rd parties use your data to train AI models By catless.ncl.ac.uk Published On :: Full Article
late Get to Plutoran Plateau to Die For Beauty By englishrussia.com Published On :: Sun, 06 Feb 2022 02:52:34 +0000 The post Get to Plutoran Plateau to Die For Beauty appeared first on English Russia. Full Article Photos Russian Nature krasnoyarsk region
late W. Jason Morgan, pioneer of plate tectonics, dies at 87 By www.princeton.edu Published On :: Mon, 14 Aug 2023 10:16:00 -0400 Morgan's paper on plate tectonics revolutionized the field of geology in the late 1960s. He taught at Princeton from 1966 to 2004. Full Article
late Getting Started with LaTeX By www.princeton.edu Published On :: Sun, 24 Nov 2024 14:30:00 -0500 An introduction to the typesetting system LaTeX will be provided using the online editor Overleaf. LaTeX allows advanced document preparation and typesetting of complex mathematical formulas. Overleaf offers advanced functionality like collaborative editing and versioning. Peer consultations and troubleshooting also offered throughout the semester. Visit https://libcal.princeton.edu/appointments/jfz to book an appointment. Full Article
late Advanced LaTeX Workshop By www.princeton.edu Published On :: Thu, 21 Nov 2024 16:30:00 -0500 This workshop provides a hands-on introduction to more advanced topics in LaTeX, including using beamer and BibLaTeX. Beamer provides an elegant way to create presentations and posters while taking advantage of the potential of LaTeX. BibLaTeX is a powerful, integrated citation system that is easy to use with LaTeX. Peer consultations and troubleshooting also offered throughout the semester. Visit https://libcal.princeton.edu/appointments/jfz to book an appointment. Full Article
late Getting Started with LaTeX By www.princeton.edu Published On :: Sun, 17 Nov 2024 14:30:00 -0500 An introduction to the typesetting system LaTeX will be provided using the online editor Overleaf. LaTeX allows advanced document preparation and typesetting of complex mathematical formulas. Overleaf offers advanced functionality like collaborative editing and versioning. Peer consultations and troubleshooting also offered throughout the semester. Visit https://libcal.princeton.edu/appointments/jfz to book an appointment. Full Article
late LaTeX Drop-in Consultations By www.princeton.edu Published On :: Thu, 14 Nov 2024 16:30:00 -0500 Need help with LaTeX formatting or citations in BibLaTeX? Stop by the Fine Hall Library Visualization Lab for support for all your LaTeX needs. Peer LaTeX trainers will be available in person and on Zoom to assist with LaTeX help and troubleshooting. Ad-hoc appointments are also offered. Visit https://libcal.princeton.edu/appointments/jfz to book an appointment. Full Article
late Spain doesn’t eat late, the clocks are just early By www.telegraph.co.uk Published On :: Wed, 28 Aug 2024 15:00:00 GMT Full Article topics:places/spain topics:things/spanish-food topics:places/barcelona topics:places/europe topics:places/seville topics:places/san-sebastian structure:eg-general structure:food-and-drink structure:travel structure:better-life/better-life-evergreen structure:better-life/better-life-feature storytype:standard
late As a 'Seasoned Professional,' Jenny Slate now finds strength in her sensitivity By www.npr.org Published On :: Fri, 08 Nov 2024 11:16:11 -0500 The comic can pick up on the "micro bad mood" of whoever she's talking to. She writes about pregnancy, childbirth and motherhood in a new book of essays, Lifeform. Originally broadcast March 12, 2024. Full Article
late Open Source Project DeFlock Is Mapping License Plate Surveillance Cameras All Over the World By yro.slashdot.org Published On :: 2024-11-12T22:10:00+00:00 An anonymous reader quotes a report from 404 Media: Flock is one of the largest vendors of automated license plate readers (ALPRs) in the country. The company markets itself as having the goal to fully "eliminate crime" with the use of ALPRs and other connected surveillance cameras, a target experts say is impossible. [...] Flock and automated license plate reader cameras owned by other companies are now in thousands of neighborhoods around the country. Many of these systems talk to each other and plug into other surveillance systems, making it possible to track people all over the country. "It went from me seeing 10 license plate readers to probably seeing 50 or 60 in a few days of driving around," [said Alabama resident and developer Will Freeman]. "I wanted to make a record of these things. I thought, 'Can I make a database of these license plate readers?'" And so he made a map, and called it DeFlock. DeFlock runs on Open Street Map, an open source, editable mapping software. He began posting signs for DeFlock (PDF) to the posts holding up Huntsville's ALPR cameras, and made a post about the project to the Huntsville subreddit, which got good attention from people who lived there. People have been plotting not just Flock ALPRs, but all sorts of ALPRs, all over the world. [...] When I first talked to Freeman, DeFlock had a few dozen cameras mapped in Huntsville and a handful mapped in Southern California and in the Seattle suburbs. A week later, as I write this, DeFlock has crowdsourced the locations of thousands of cameras in dozens of cities across the United States and the world. He said so far more than 1,700 cameras have been reported in the United States and more than 5,600 have been reported around the world. He has also begun scraping parts of Flock's website to give people a better idea of where to look to map them. For example, Flock says that Colton, California, a city with just over 50,000 people outside of San Bernardino, has 677 cameras. People who submit cameras to DeFlock have the ability to note the direction that they are pointing in, which can help people understand how these cameras are being positioned and the strategies that companies and police departments are using when deploying them. For example, all of the cameras in downtown Huntsville are pointing away from the downtown core, meaning they are primarily focused on detecting cars that are entering downtown Huntsville from other areas. Read more of this story at Slashdot. Full Article
late Putin congratulates 'courageous' Trump on election win By www.bbc.com Published On :: Thu, 07 Nov 2024 19:58:39 GMT The Russian president says he was impressed by Trump's reaction to the first assassination attempt against him. Full Article
late Late goals, corners and fine margins - Premier League trends By www.bbc.com Published On :: Tue, 12 Nov 2024 15:54:51 GMT The trends of the Premier League season so far that make for interesting reading. Full Article
late How Hard Could It Be to Translate a Picture Book? By www.nytimes.com Published On :: Fri, 30 Jun 2023 09:08:23 EDT With so few words, most of them kid-friendly, it should be a piece of cake. But it depends on who’s holding the whisk. Translator Daniel Hahn say,"I believe my job as a translator is to preserve all the dimensions of a book, not just one of them. When I find complexity, my job is to keep complexity, or more accurately to reconstruct it. And some of the most complex books I’ve reconstructed have been children’s picture books." Full Article
late News24 | WATCH | SA closes Lebombo border port of entry as Mozambique violence escalates By www.news24.com Published On :: Thursday Nov 07 2024 13:26:55 South Africa has closed the Lebombo port of entry to and from Mozambique after 15 officials from the Ressano Garcia border fled to SA on Thursday morning for protection. Full Article
late News24 | Mozambique on the brink: Violence escalates as youth protests extend beyond Maputo By www.news24.com Published On :: Friday Nov 08 2024 04:45:14 Mozambique is on a knife's edge as young people continue to protest against the outcome of the October elections that extended 49 years of Frelimo rule. Full Article
late News24 | Maputo is almost under siege, says SA High Commissioner, as post-election unrest escalates By www.news24.com Published On :: Friday Nov 08 2024 05:28:16 Amid calls for ongoing protests after violent clashes on Thursday, South Africa's High Commissioner to Mozambique Siphiwe Nyanda has declared "Maputo is almost under siege". Full Article
late Consume First, Deal with the Shit Later By battellemedia.com Published On :: Tue, 30 Jul 2024 14:54:54 +0000 Websites are Blocking the Wrong AI Scrapers (Because AI Companies Keep Making New Ones) – 404 Media *** I had a call the other day with the Dean of a top-five school of public health, and in between furiously scribbling notes (yes, I still take notes), it struck me that here in the United States … Continue reading "Consume First, Deal with the Shit Later" Full Article The Web As Platform ai artificial intelligence data Internet policy
late Sport | 'Dangerous' and 'arrogant': Rassie's latest Bomb Squad whips up fresh criticism up north By www.news24.com Published On :: Wednesday Nov 13 2024 05:01:00 Rassie Erasmus' 7-1 variation of the Bomb Squad used against Scotland on Sunday set off a few tremors in the north, with Times writer Stephen Jones the latest to criticise the "dangerous" and "arrogant" tactic. Full Article
late Newsroom: Buy Now Pay Later Transactions Will Surpass $100 billion by 2024 By www.emarketer.com Published On :: Wed, 22 Jun 2022 04:01:00 GMT June 22, 2022 (New York, NY) – Will Apple’s entry into the buy now, pay later (BNPL) space upend the already competitive industry? That’s the question many are trying to […] Full Article
late Hdac3 regulates bone modeling by suppressing osteoclast responsiveness to RANKL [Signal Transduction] By www.jbc.org Published On :: 2020-12-18T00:06:18-08:00 Hdac3 is a lysine deacetylase that removes acetyl groups from histones and additional proteins. Although Hdac3 functions within mesenchymal lineage skeletal cells are defined, little is known about Hdac3 activities in bone-resorbing osteoclasts. In this study we conditionally deleted Hdac3 within Ctsk-expressing cells and examined the effects on bone modeling and osteoclast differentiation in mice. Hdac3 deficiency reduced femur and tibia periosteal circumference and increased cortical periosteal osteoclast number. Trabecular bone was likewise reduced and was accompanied by increased osteoclast number per trabecular bone surface. We previously showed that Hdac3 deacetylates the p65 subunit of the NF-κB transcriptional complex to decrease DNA-binding and transcriptional activity. Hdac3-deficient osteoclasts demonstrate increased K310 NF-κB acetylation and NF-κB transcriptional activity. Hdac3-deficient osteoclast lineage cells were hyper-responsive to RANKL and showed elevated ex vivo osteoclast number and size and enhanced bone resorption in pit formation assays. Osteoclast-directed Hdac3 deficiency decreased cortical and trabecular bone mass parameters, suggesting that Hdac3 regulates coupling of bone resorption and bone formation. We surveyed a panel of osteoclast-derived coupling factors and found that Hdac3 suppression diminished sphingosine-1-phosphate production. Osteoclast-derived sphingosine-1-phosphate acts in paracrine to promote bone mineralization. Mineralization of WT bone marrow stromal cells cultured with conditioned medium from Hdac3-deficient osteoclasts was markedly reduced. Expression of alkaline phosphatase, type 1a1 collagen, and osteocalcin was also suppressed, but no change in Runx2 expression was observed. Our results demonstrate that Hdac3 controls bone modeling by suppressing osteoclast lineage cell responsiveness to RANKL and coupling to bone formation. Full Article
late Relative and Absolute Quantification of Postsynaptic Density Proteome Isolated from Rat Forebrain and Cerebellum By www.mcponline.org Published On :: 2006-06-01 Dongmei ChengJun 1, 2006; 5:1158-1170Datasets Full Article
late Highly Selective Enrichment of Phosphorylated Peptides from Peptide Mixtures Using Titanium Dioxide Microcolumns By www.mcponline.org Published On :: 2005-07-01 Martin R. LarsenJul 1, 2005; 4:873-886Technology Full Article
late Phosphate-binding Tag, a New Tool to Visualize Phosphorylated Proteins By www.mcponline.org Published On :: 2006-04-01 Eiji KinoshitaApr 1, 2006; 5:749-757Technology Full Article
late Microtubule affinity-regulating kinase 4 with an Alzheimer's disease-related mutation promotes tau accumulation and exacerbates neurodegeneration [Neurobiology] By www.jbc.org Published On :: 2020-12-11T00:06:20-08:00 Accumulation of the microtubule-associated protein tau is associated with Alzheimer's disease (AD). In AD brain, tau is abnormally phosphorylated at many sites, and phosphorylation at Ser-262 and Ser-356 plays critical roles in tau accumulation and toxicity. Microtubule affinity–regulating kinase 4 (MARK4) phosphorylates tau at those sites, and a double de novo mutation in the linker region of MARK4, ΔG316E317D, is associated with an elevated risk of AD. However, it remains unclear how this mutation affects phosphorylation, aggregation, and accumulation of tau and tau-induced neurodegeneration. Here, we report that MARK4ΔG316E317D increases the abundance of highly phosphorylated, insoluble tau species and exacerbates neurodegeneration via Ser-262/356–dependent and –independent mechanisms. Using transgenic Drosophila expressing human MARK4 (MARK4wt) or a mutant version of MARK4 (MARK4ΔG316E317D), we found that coexpression of MARK4wt and MARK4ΔG316E317D increased total tau levels and enhanced tau-induced neurodegeneration and that MARK4ΔG316E317D had more potent effects than MARK4wt. Interestingly, the in vitro kinase activities of MARK4wt and MARK4ΔG316E317D were similar. When tau phosphorylation at Ser-262 and Ser-356 was blocked by alanine substitutions, MARK4wt did not promote tau accumulation or exacerbate neurodegeneration, whereas coexpression of MARK4ΔG316E317D did. Both MARK4wt and MARK4ΔG316E317D increased the levels of oligomeric forms of tau; however, only MARK4ΔG316E317D further increased the detergent insolubility of tau in vivo. Together, these findings suggest that MARK4ΔG316E317D increases tau levels and exacerbates tau toxicity via a novel gain-of-function mechanism and that modification in this region of MARK4 may affect disease pathogenesis. Full Article
late Can Multilateralism Survive? By f1.media.brightcove.com Published On :: Tue, 06 Nov 2018 00:00:00 +0000 Full Article
late Undercurrents: Episode 30 - The Crisis in Kashmir, and How to Regulate Big Tech By f1.media.brightcove.com Published On :: Thu, 04 Apr 2019 00:00:00 +0100 Full Article
late Who Should Regulate Free Speech Online? By f1.media.brightcove.com Published On :: Thu, 27 Jun 2019 00:00:00 +0100 Full Article
late Adipose differentiation-related protein is an ubiquitously expressed lipid storage droplet-associated protein By www.jlr.org Published On :: 1997-11-01 DL BrasaemleNov 1, 1997; 38:2249-2263Articles Full Article
late Stop codon read-through of mammalian MTCH2 leading to an unstable isoform regulates mitochondrial membrane potential [Gene Regulation] By www.jbc.org Published On :: 2020-12-11T00:06:20-08:00 Stop codon read-through (SCR) is a process of continuation of translation beyond a stop codon. This phenomenon, which occurs only in certain mRNAs under specific conditions, leads to a longer isoform with properties different from that of the canonical isoform. MTCH2, which encodes a mitochondrial protein that regulates mitochondrial metabolism, was selected as a potential read-through candidate based on evolutionary conservation observed in the proximal region of its 3' UTR. Here, we demonstrate translational read-through across two evolutionarily conserved, in-frame stop codons of MTCH2 using luminescence- and fluorescence-based assays, and by analyzing ribosome-profiling and mass spectrometry (MS) data. This phenomenon generates two isoforms, MTCH2x and MTCH2xx (single- and double-SCR products, respectively), in addition to the canonical isoform MTCH2, from the same mRNA. Our experiments revealed that a cis-acting 12-nucleotide sequence in the proximal 3' UTR of MTCH2 is the necessary signal for SCR. Functional characterization showed that MTCH2 and MTCH2x were localized to mitochondria with a long t1/2 (>36 h). However, MTCH2xx was found predominantly in the cytoplasm. This mislocalization and its unique C terminus led to increased degradation, as shown by greatly reduced t1/2 (<1 h). MTCH2 read-through–deficient cells, generated using CRISPR-Cas9, showed increased MTCH2 expression and, consistent with this, decreased mitochondrial membrane potential. Thus, double-SCR of MTCH2 regulates its own expression levels contributing toward the maintenance of normal mitochondrial membrane potential. Full Article
late Fighting escalates in Yemen despite coronavirus 'ceasefire' By www.chathamhouse.org Published On :: Wed, 06 May 2020 17:38:30 +0000 Source The Guardian URL https://www.theguardian.com/world/2020/apr/14/fighting-escalates-in-yemen-despit... Release date 14 April 2020 Expert Farea Al-Muslimi In the news type Op-ed Hide date on homepage Full Article
late The HRDC domain oppositely modulates the unwinding activity of E. coli RecQ helicase on duplex DNA and G-quadruplex [Enzymology] By www.jbc.org Published On :: 2020-12-18T00:06:18-08:00 RecQ family helicases are highly conserved from bacteria to humans and have essential roles in maintaining genome stability. Mutations in three human RecQ helicases cause severe diseases with the main features of premature aging and cancer predisposition. Most RecQ helicases shared a conserved domain arrangement which comprises a helicase core, an RecQ C-terminal domain, and an auxiliary element helicase and RNaseD C-terminal (HRDC) domain, the functions of which are poorly understood. In this study, we systematically characterized the roles of the HRDC domain in E. coli RecQ in various DNA transactions by single-molecule FRET. We found that RecQ repetitively unwinds the 3'-partial duplex and fork DNA with a moderate processivity and periodically patrols on the ssDNA in the 5'-partial duplex by translocation. The HRDC domain significantly suppresses RecQ activities in the above transactions. In sharp contrast, the HRDC domain is essential for the deep and long-time unfolding of the G4 DNA structure by RecQ. Based on the observations that the HRDC domain dynamically switches between RecA core- and ssDNA-binding modes after RecQ association with DNA, we proposed a model to explain the modulation mechanism of the HRDC domain. Our findings not only provide new insights into the activities of RecQ on different substrates but also highlight the novel functions of the HRDC domain in DNA metabolisms. Full Article
late Tekno - The Irish Collection - Ref. 258 - Scania Articulated Truck - Glynns, Galway - Miniature Diecast Metal Scale Model Heavy Goods Vehicle By www.flickr.com Published On :: Tue, 12 Nov 2024 06:44:08 -0800 firehouse.ie posted a photo: Full Article
late Tekno - The Irish Collection - Ref. 258 - Scania Articulated Truck - Glynns, Galway - Miniature Diecast Metal Scale Model Heavy Goods Vehicle By www.flickr.com Published On :: Tue, 12 Nov 2024 06:44:07 -0800 firehouse.ie posted a photo: Full Article
late Mouse Ifit1b is a cap1-RNA-binding protein that inhibits mouse coronavirus translation and is regulated by complexing with Ifit1c [RNA] By www.jbc.org Published On :: 2020-12-18T00:06:18-08:00 Knockout mouse models have been extensively used to study the antiviral activity of IFIT (interferon-induced protein with tetratricopeptide repeats). Human IFIT1 binds to cap0 (m7GpppN) RNA, which lacks methylation on the first and second cap-proximal nucleotides (cap1, m7GpppNm, and cap2, m7GpppNmNm, respectively). These modifications are signatures of “self” in higher eukaryotes, whereas unmodified cap0-RNA is recognized as foreign and, therefore, potentially harmful to the host cell. IFIT1 inhibits translation at the initiation stage by competing with the cap-binding initiation factor complex, eIF4F, restricting infection by certain viruses that possess “nonself” cap0-mRNAs. However, in mice and other rodents, the IFIT1 orthologue has been lost, and the closely related Ifit1b has been duplicated twice, yielding three paralogues: Ifit1, Ifit1b, and Ifit1c. Although murine Ifit1 is similar to human IFIT1 in its cap0-RNA–binding selectivity, the roles of Ifit1b and Ifit1c are unknown. Here, we found that Ifit1b preferentially binds to cap1-RNA, whereas binding is much weaker to cap0- and cap2-RNA. In murine cells, we show that Ifit1b can modulate host translation and restrict WT mouse coronavirus infection. We found that Ifit1c acts as a stimulatory cofactor for both Ifit1 and Ifit1b, promoting their translation inhibition. In this way, Ifit1c acts in an analogous fashion to human IFIT3, which is a cofactor to human IFIT1. This work clarifies similarities and differences between the human and murine IFIT families to facilitate better design and interpretation of mouse models of human infection and sheds light on the evolutionary plasticity of the IFIT family. Full Article
late 12th International Forum on Illegal, Unreported and Unregulated Fishing By www.chathamhouse.org Published On :: Fri, 27 Sep 2019 09:15:01 +0000 12th International Forum on Illegal, Unreported and Unregulated Fishing 18 May 2020 TO 22 May 2020 — 2:00PM TO 3:30PM Anonymous (not verified) 27 September 2019 The Chatham House 12th International Forum on Illegal, Unreported and Unregulated (IUU) Fishing took place over the week of 18–22 May 2020. Due to COVID-19, it took the form of a series of daily webinars. The digital conference, which comprised six sessions and three keynote speeches, brought together more than 750 representatives of international organizations, governments, civil society organizations, businesses and academia – from 87 different countries – to discuss the latest initiatives, regulations and research in the areas of fisheries governance and trade in illegal fish products. Full Article
late Slices template By www.chathamhouse.org Published On :: Fri, 11 Sep 2020 08:56:32 +0000 Slices template Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. nfaulds-adams… 11 September 2020 Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Full Article
late PFN2 and NAA80 cooperate to efficiently acetylate the N-terminus of actin [Protein Structure and Folding] By www.jbc.org Published On :: 2020-12-04T00:06:05-08:00 The actin cytoskeleton is of profound importance to cell shape, division, and intracellular force generation. Profilins bind to globular (G-)actin and regulate actin filament formation. Although profilins are well-established actin regulators, the distinct roles of the dominant profilin, profilin 1 (PFN1), versus the less abundant profilin 2 (PFN2) remain enigmatic. In this study, we use interaction proteomics to discover that PFN2 is an interaction partner of the actin N-terminal acetyltransferase NAA80, and further confirm this by analytical ultracentrifugation. Enzyme assays with NAA80 and different profilins demonstrate that PFN2 binding specifically increases the intrinsic catalytic activity of NAA80. NAA80 binds PFN2 through a proline-rich loop, deletion of which abrogates PFN2 binding. Small-angle X-ray scattering shows that NAA80, actin, and PFN2 form a ternary complex and that NAA80 has partly disordered regions in the N-terminus and the proline-rich loop, the latter of which is partly ordered upon PFN2 binding. Furthermore, binding of PFN2 to NAA80 via the proline-rich loop promotes binding between the globular domains of actin and NAA80, and thus acetylation of actin. However, the majority of cellular NAA80 is stably bound to PFN2 and not to actin, and we propose that this complex acetylates G-actin before it is incorporated into filaments. In conclusion, we reveal a functionally specific role of PFN2 as a stable interactor and regulator of the actin N-terminal acetyltransferase NAA80, and establish the modus operandi for NAA80-mediated actin N-terminal acetylation, a modification with a major impact on cytoskeletal dynamics. Full Article
late Heme oxygenase-2 is post-translationally regulated by heme occupancy in the catalytic site [Protein Structure and Folding] By www.jbc.org Published On :: 2020-12-11T00:06:20-08:00 Heme oxygenase-2 (HO2) and -1 (HO1) catalyze heme degradation to biliverdin, CO, and iron, forming an essential link in the heme metabolism network. Tight regulation of the cellular levels and catalytic activities of HO1 and HO2 is important for maintaining heme homeostasis. HO1 expression is transcriptionally regulated; however, HO2 expression is constitutive. How the cellular levels and activity of HO2 are regulated remains unclear. Here, we elucidate the mechanism of post-translational regulation of cellular HO2 levels by heme. We find that, under heme-deficient conditions, HO2 is destabilized and targeted for degradation, suggesting that heme plays a direct role in HO2 regulation. HO2 has three heme binding sites: one at its catalytic site and the others at its two heme regulatory motifs (HRMs). We report that, in contrast to other HRM-containing proteins, the cellular protein level and degradation rate of HO2 are independent of heme binding to the HRMs. Rather, under heme deficiency, loss of heme binding to the catalytic site destabilizes HO2. Consistently, an HO2 catalytic site variant that is unable to bind heme exhibits a constant low protein level and an enhanced protein degradation rate compared with the WT HO2. Finally, HO2 is degraded by the lysosome through chaperone-mediated autophagy, distinct from other HRM-containing proteins and HO1, which are degraded by the proteasome. These results reveal a novel aspect of HO2 regulation and deepen our understanding of HO2's role in maintaining heme homeostasis, paving the way for future investigation into HO2's pathophysiological role in heme deficiency response. Full Article
late Characterizing human {alpha}-1,6-fucosyltransferase (FUT8) substrate specificity and structural similarities with related fucosyltransferases [Protein Structure and Folding] By www.jbc.org Published On :: 2020-12-11T00:06:20-08:00 Mammalian Asn-linked glycans are extensively processed as they transit the secretory pathway to generate diverse glycans on cell surface and secreted glycoproteins. Additional modification of the glycan core by α-1,6-fucose addition to the innermost GlcNAc residue (core fucosylation) is catalyzed by an α-1,6-fucosyltransferase (FUT8). The importance of core fucosylation can be seen in the complex pathological phenotypes of FUT8 null mice, which display defects in cellular signaling, development, and subsequent neonatal lethality. Elevated core fucosylation has also been identified in several human cancers. However, the structural basis for FUT8 substrate specificity remains unknown.Here, using various crystal structures of FUT8 in complex with a donor substrate analog, and with four distinct glycan acceptors, we identify the molecular basis for FUT8 specificity and activity. The ordering of three active site loops corresponds to an increased occupancy for bound GDP, suggesting an induced-fit folding of the donor-binding subsite. Structures of the various acceptor complexes were compared with kinetic data on FUT8 active site mutants and with specificity data from a library of glycan acceptors to reveal how binding site complementarity and steric hindrance can tune substrate affinity. The FUT8 structure was also compared with other known fucosyltransferases to identify conserved and divergent structural features for donor and acceptor recognition and catalysis. These data provide insights into the evolution of modular templates for donor and acceptor recognition among GT-B fold glycosyltransferases in the synthesis of diverse glycan structures in biological systems. Full Article
late Lipid-tuned Zinc Transport Activity of Human ZnT8 Protein Correlates with Risk for Type-2 Diabetes [Molecular Bases of Disease] By www.jbc.org Published On :: 2016-12-30T00:06:37-08:00 Zinc is a critical element for insulin storage in the secretory granules of pancreatic beta cells. The islet-specific zinc transporter ZnT8 mediates granular sequestration of zinc ions. A genetic variant of human ZnT8 arising from a single nonsynonymous nucleotide change contributes to increased susceptibility to type-2 diabetes (T2D), but it remains unclear how the high risk variant (Arg-325), which is also a higher frequency (>50%) allele, is correlated with zinc transport activity. Here, we compared the activity of Arg-325 with that of a low risk ZnT8 variant (Trp-325). The Arg-325 variant was found to be more active than the Trp-325 form following induced expression in HEK293 cells. We further examined the functional consequences of changing lipid conditions to mimic the impact of lipid remodeling on ZnT8 activity during insulin granule biogenesis. Purified ZnT8 variants in proteoliposomes exhibited more than 4-fold functional tunability by the anionic phospholipids, lysophosphatidylcholine and cholesterol. Over a broad range of permissive lipid compositions, the Arg-325 variant consistently exhibited accelerated zinc transport kinetics versus the Trp-form. In agreement with the human genetic finding that rare loss-of-function mutations in ZnT8 are associated with reduced T2D risk, our results suggested that the common high risk Arg-325 variant is hyperactive, and thus may be targeted for inhibition to reduce T2D risk in the general populations. Full Article
late Conflict-Related Sexual Violence in Ukraine: An Opportunity for Gender-Sensitive Policymaking? By www.chathamhouse.org Published On :: Mon, 17 Aug 2020 23:55:05 +0000 18 August 2020 Kateryna Busol Robert Bosch Stiftung Academy Fellow, Russia and Eurasia Programme @KaterynaBusol LinkedIn Meaningful change is needed in Ukraine’s response to the conflict-related sexual violence, which affects both women and men. 2020-08-18-Ukraine-Intl-Womens-Day.jpg Ukrainian feminists and human rights activists carry posters at an International Women's Day protest in Kyiv, Ukraine on 8 March 2019. Photo: Getty Images. The virus of violenceAccording to the UN (para. 7) and the International Criminal Court (ICC, para. 279), conflict-related sexual violence (CRSV) is quite prevalent in hostilities-affected eastern Ukraine. Both sexes are subjected to sexualized torture, rape, forced nudity, prolonged detention in unsanitary conditions with members of the other sex and threats of sexual violence towards detainees or their relatives to force confessions. Men are castrated. Women additionally suffer from sexual slavery, enforced and survival prostitution, and other forms of sexual abuse. Women are more exposed to CRSV: in the hostilities-affected area, every third woman has experienced or witnessed CRSV as opposed to every fourth man.COVID-19 has redirected funding priorities, affecting the availability of medical and psychological help for CRSV survivors worldwide. In Ukraine, the very reporting of such violence, stigmatized even before the pandemic, has been further undermined by the country-wide quarantine-induced restrictions on movement and the closure of checkpoints between the government-controlled and temporarily uncontrolled areas.Addressing CRSV in UkraineThe stigma of CRSV, the patchy domestic legislation, and the unpreparedness of the criminal justice system to deal with such cases prevent the authorities from properly helping those harmed in the ongoing Russia-Ukraine armed conflict.CRSV is equally traumatizing yet different in nuance for men and women. Female victims often choose not to report the violence. Women avoid protracted proceedings likely to cause re-traumatization and the disclosure of their experience, which could be particularly excruciating in small communities where everybody knows everyone.Men also struggle to provide their accounts of CRSV. Their suppressed pain and shame of genital mutilation and other CRSV result in sexual and other health disfunctions. Combined with the post-conflict mental health struggles, this has been shown to lead to increased domestic violence and even suicide.The very investigation of CRSV in Ukraine is challenging. Certain tests and examinations need to be done straight after an assault, which in the context of detention and grey zones of hostilities is often impossible. Specialized medical and psychological support is lacking. Investigators and prosecutors are hardly trained to deal with CRSV to the point that they do not ask questions about it during the interviews. Burdened by trauma and stigma, survivors are inclined to report torture or inhuman treatment, but not the sexualized aspects thereof.Seven years into the conflict, the state still has not criminalized the full spectrum of CRSV in its domestic law. Ukraine’s Criminal Code contains a brief list of the violations of the rules and customs of warfare in article 438. It prohibits the inhuman treatment of civilians and POWs but does not list any types of CRSV.The article has an open-ended reference to Ukraine’s ratified international treaties, from which the responsibility for other armed conflict violations may be derived. For the more detailed norms on CRSV, Ukraine should refer at least to Geneva Convention IV protecting civilians and two additional protocols to the Geneva Conventions, to which it is a party.However, the novelty of the war context for Ukrainian investigators, prosecutors and judges and their overcautiousness about the direct application of international conventions mean that in practice, observing the treaty or jurisprudential instruction on CRSV has been slow.Use of the Criminal Code’s articles on sexual violence not related to an armed conflict is not viable. Such provisions fail to reflect the horrible variety and complexity of CRSV committed in hostilities. They also envisage lesser punishment than a war crime of sexual violence would entail. Cumulatively, this fails to account for the intention of a perpetrator, the gravity of the crime and the trauma of its victims.The lack of public debate and state action on CRSV understates its magnitude. Ukraine should break its silence about CRSV in Donbas and make addressing this violence part of its actionable agenda - in law and in implementation.Ukraine should incorporate all war crimes and crimes against humanity of CRSV in its domestic legislation; ensure a more gendered psychological and medical support for both sexes; establish rehabilitation and compensation programmes for CRSV survivors; create special victims and witness protection schemes; consider the different stigmatizing effects of CRSV on men and women in criminal proceedings and engage the professionals of the same sex as the victim; map CRSV in the bigger picture of other crimes in Donbas to better understand the motives of the perpetrators; submit more information about CRSV to the ICC and educate the public to destigmatize the CRSV survivors.The drafters of Ukraine’s transitional justice roadmap should ensure that it highlights CRSV, adopts a gendered approach to it and endorses female participation as a crucial component of reconciliation and broader policymaking.Embracive policymakingAlthough ‘the discriminatory line almost inevitably hurts women,’ 'every gender discrimination is a two-edged sword’, Ruth Bader Ginsburg famously argued before the US Supreme Court. This could not be more relevant for Ukraine. The conflict - and lockdown-related violence has reverberated deeper within Ukrainian society, raising fundamental questions about the roles of both sexes and gender equality.The failure to address CRSV and its different stigmas for both sexes mirrors the general lack of sustainable gender lenses in Ukraine's policymaking. It is no coincidence that a June 2020 proposal for gender parity in political parties coincided with another spike of sexist remarks by top officials. While women get access to more positions in the army, sexual harassment in the military is investigated slowly. Despite all the impressive female professionals, no woman made it to the first four-member consultative civic group in the Minsk process. Such lack of diversity sends an unfortunate message that women are not important for Ukraine’s peace process.Ginsburg said, ‘women belong in all places where decisions are being made.’ CRSV against either sex won’t be addressed properly until both sexes contribute with their talents and their grievances to all pillars of Ukraine’s state governance and strategy. Ukraine should look to engage professional women - and there are plenty - to join its public service not just in numbers, but as the indispensable equal voices of a powerful choir. Full Article
late Methylated PP2A stabilizes Gcn4 to enable a methionine-induced anabolic program [Metabolism] By www.jbc.org Published On :: 2020-12-25T00:06:31-08:00 Methionine, through S-adenosylmethionine, activates a multifaceted growth program in which ribosome biogenesis, carbon metabolism, and amino acid and nucleotide biosynthesis are induced. This growth program requires the activity of the Gcn4 transcription factor (called ATF4 in mammals), which facilitates the supply of metabolic precursors that are essential for anabolism. However, how Gcn4 itself is regulated in the presence of methionine is unknown. Here, we discover that Gcn4 protein levels are increased by methionine, despite conditions of high cell growth and translation (in which the roles of Gcn4 are not well-studied). We demonstrate that this mechanism of Gcn4 induction is independent of transcription, as well as the conventional Gcn2/eIF2α-mediated increased translation of Gcn4. Instead, when methionine is abundant, Gcn4 phosphorylation is decreased, which reduces its ubiquitination and therefore degradation. Gcn4 is dephosphorylated by the protein phosphatase 2A (PP2A); our data show that when methionine is abundant, the conserved methyltransferase Ppm1 methylates and alters the activity of the catalytic subunit of PP2A, shifting the balance of Gcn4 toward a dephosphorylated, stable state. The absence of Ppm1 or the loss of the PP2A methylation destabilizes Gcn4 even when methionine is abundant, leading to collapse of the Gcn4-dependent anabolic program. These findings reveal a novel, methionine-dependent signaling and regulatory axis. Here methionine directs the conserved methyltransferase Ppm1 via its target phosphatase PP2A to selectively stabilize Gcn4. Through this, cells conditionally modify a major phosphatase to stabilize a metabolic master regulator and drive anabolism. Full Article
late Serum lipoprotein-derived fatty acids regulate hypoxia-inducible factor [Metabolism] By www.jbc.org Published On :: 2020-12-25T00:06:31-08:00 Oxygen regulates hypoxia-inducible factor (HIF) transcription factors to control cell metabolism, erythrogenesis, and angiogenesis. Whereas much has been elucidated about how oxygen regulates HIF, whether lipids affect HIF activity is un-known. Here, using cultured cells and two animal models, we demonstrate that lipoprotein-derived fatty acids are an independent regulator of HIF. Decreasing extracellular lipid supply inhibited HIF prolyl hydroxylation, leading to accumulation of the HIFα subunit of these heterodimeric transcription factors comparable with hypoxia with activation of downstream target genes. The addition of fatty acids to culture medium suppressed this signal, which required an intact mitochondrial respiratory chain. Mechanistically, fatty acids and oxygen are distinct signals integrated to control HIF activity. Finally, we observed lipid signaling to HIF and changes in target gene expression in developing zebrafish and adult mice, and this pathway operates in cancer cells from a range of tissues. This study identifies fatty acids as a physiological modulator of HIF, defining a mechanism for lipoprotein regulation that functions in parallel to oxygen. Full Article
late Coronavirus infection and PARP expression dysregulate the NAD metabolome: An actionable component of innate immunity [Molecular Bases of Disease] By www.jbc.org Published On :: 2020-12-25T00:06:30-08:00 Poly(ADP-ribose) polymerase (PARP) superfamily members covalently link either a single ADP-ribose (ADPR) or a chain of ADPR units to proteins using NAD as the source of ADPR. Although the well-known poly(ADP-ribosylating) (PARylating) PARPs primarily function in the DNA damage response, many noncanonical mono(ADP-ribosylating) (MARylating) PARPs are associated with cellular antiviral responses. We recently demonstrated robust up-regulation of several PARPs following infection with murine hepatitis virus (MHV), a model coronavirus. Here we show that SARS-CoV-2 infection strikingly up-regulates MARylating PARPs and induces the expression of genes encoding enzymes for salvage NAD synthesis from nicotinamide (NAM) and nicotinamide riboside (NR), while down-regulating other NAD biosynthetic pathways. We show that overexpression of PARP10 is sufficient to depress cellular NAD and that the activities of the transcriptionally induced enzymes PARP7, PARP10, PARP12 and PARP14 are limited by cellular NAD and can be enhanced by pharmacological activation of NAD synthesis. We further demonstrate that infection with MHV induces a severe attack on host cell NAD+ and NADP+. Finally, we show that NAMPT activation, NAM, and NR dramatically decrease the replication of an MHV that is sensitive to PARP activity. These data suggest that the antiviral activities of noncanonical PARP isozyme activities are limited by the availability of NAD and that nutritional and pharmacological interventions to enhance NAD levels may boost innate immunity to coronaviruses. Full Article
late Africa-Japan relations and evolving multilateralism By www.chathamhouse.org Published On :: Thu, 17 Nov 2022 15:52:14 +0000 Africa-Japan relations and evolving multilateralism 23 November 2022 — 9:00AM TO 10:30AM Anonymous (not verified) 17 November 2022 Online This panel discussion reflects on the outcomes of TICAD 8 in 2022 and looks forward to TICAD 9 in 2025. The eighth edition of the Tokyo International Conference on African Development (TICAD), held in Tunisia from 27–28 August 2022, marked the second time that Japan’s now-triennial summit was hosted in an African country, after TICAD 6 was held in Kenya in 2016. The summit was attended by 48 representatives of African countries and at least 20 heads of state and government and included a pledge by the Japanese government to commit $30 billion in public and private finance to Africa over the next three years. In reaffirming the three pillars of TICAD 8 – revolving around the economy, societal resilience, and peace and stability – the newly adopted Tunis Declaration (28 August 2022) also outlined some of the key projects underpinning Japan’s pledge, including a $4 billion fund for a Green Growth Initiative with Africa (GGA). 2023 will mark 30 years since the inception of TICAD in 1993 and ten years since the African Union (AU)’s adoption of its flagship Agenda 2063, on which the Tunis Declaration placed distinct emphasis. This panel discussion reflects on the outcomes of TICAD 8 in 2022 and looks forward to TICAD 9 in 2025, exploring wider developments in summitry, Africa-Asia relations, and modes of multilateralism. Questions explored include: How has international summitry evolved over the past three decades since the inception of TICAD in 1993, which represented the first periodic high-level summit engagement with Africa by a ‘non-traditional’ partner? Looking ahead to TICAD 9 in 2025, what are the priorities for enforcing the stated tenets of TICAD – ‘African ownership, international partnership, inclusivity and openness’ – in cooperation efforts? What lessons can be drawn from TICAD’s co-partnership approach (with the African Union Commission and others) – particularly given increasing calls for AU membership of the G20 and Prime Minister Kishida’s pledge at TICAD 8 to support a permanent African UNSC seat during its non-permanent membership in 2023–24? Beyond membership, what are the priorities for furthering agency? How are Africa-Asia relations evolving and diverging? How are Japan and other Asian countries perceived by different African countries? This event is the third in the Chatham House – Japan House London webinar series (2022-2023). The series is held in partnership with Japan House London. You can watch previous webinars from the series here. Full Article
late MIRD Pamphlet No. 31: MIRDcell V4--Artificial Intelligence Tools to Formulate Optimized Radiopharmaceutical Cocktails for Therapy By jnm.snmjournals.org Published On :: 2024-10-24T11:58:49-07:00 Visual Abstract Full Article