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Overexpression of heparan sulfate 6-O-sulfotransferases in human embryonic kidney 293 cells results in increased N-acetylglucosaminyl 6-O-sulfation

Heparan sulfate (HS) interacts with a variety of proteins and thus mediates numerous complex biological processes. These interactions critically depend on the patterns of O-sulfate groups within the HS chains that determine binding sites for proteins. In particular the distribution of 6-O-sulfated glucosamine residues influences binding and activity of HS-dependent signaling molecules. The protein

Oligosaccharide library-based assessment of heparan sulfate 6-O-sulfotransferase substrate specificity

Heparan sulfate mediates numerous complex biological processes. Its action critically depends on the amount and the positions of O-sulfate groups (iduronyl 2-O-sulfates, glucosaminyl 6-O- and 3-O-sulfates) that form binding sites for proteins. The structures and distribution of these protein-binding domains are influenced by the expression and substrate specificity of heparan sulfate biosynthetic

Substrate specificities of mouse heparan sulphate glucosaminyl 6-O-sulphotransferases

Glycosaminoglycan heparan sulphate interacts with a variety of proteins, such as growth factors, cytokines, enzymes and inhibitors and, thus, influences cellular functions, including adhesion, motility, differentiation and morphogenesis. The interactions generally involve saccharide domains in heparan sulphate chains, with precisely located O-sulphate groups. The 6-O-sulphate groups on glucosamine

Watching the brain build memories across eye movements: an EEG - eye-tracking coregistration study

Introduction Episodic memory allows us to revisit our past and recollect inter-related elements that characterize life events (Tulving, 1983). When forming such relational memories, we only apprehend a small part of our visual field in full acuity at a time. This limitation is overcome by shifting visual attention over a sequence of eye movements. We bind these visual “samples” of the world into

Cultivation of the gut bacterium Prevotella copri DSM 18205T using glucose and xylose as carbon sources

Prevotella copri DSM18205T is a human gut bacterium, suggested as a next-generation probiotic. To utilize it as such, it is, however, necessary to grow the species in a reproducible manner. Prevotella copri has previously been reported to be highly sensitive to oxygen, and hence difficult to isolate and cultivate. This study presents successful batch cultivation strategies for viable strain inocul

Novel xylan-degrading enzymes from polysaccharide utilizing loci of Prevotella copri DSM18205

Prevotella copri is a bacterium that can be found in the human gastrointestinal tract (GIT). The role of P. copri in the GIT is unclear, and elevated numbers of the microbe have been reported both in dietary fiber-induced improvement in glucose metabolism but also in conjunction with certain inflammatory conditions. These findings raised our interest in investigating the possibility of P. copri to

Going to extremes - a metagenomic journey into the dark matter of life

The Virus-X-Viral Metagenomics for Innovation Value-project was a scientific expedition to explore and exploit uncharted territory of genetic diversity in extreme natural environments such as geothermal hot springs and deep-sea ocean ecosystems. Specifically, the project was set to analyse and exploit viral metagenomes with the ultimate goal of developing new gene products with high innovation val

Governance and interdependencies of critical infrastructures : Exploring mechanisms for cross-sector resilience

Much contemporary critical infrastructure research has been devoted to studies of the effects of risks stemming from interdependencies between critical infrastructures, here referred to as interdependency-related risks. However, this research has placed limited emphasis on infrastructure actors’ efforts to manage such risks in practice, and it remains unclear to what extent and how critical infras

The perceptual importance of falling pitch for speakers from different dialects of Swedish

Falling pitch has long been argued to be a key feature in the distinction of Swedish pitch accents. In this paper, neurophysiological and behavioural evidence substantiating the perceptual importance of HL pitch contours at the word level is discussed. When presentedwith novel words, Swedes, regard-less of dialect,preattentively distinguished meaningfulwords with falling pitch.Falling pitch was al

Covid-19 och slaget mot turism och besöksnäring : Turist- och beställningstrafikens utmaningar och styrkor

Bussbranschen kan tillhöra en av de näringar som drabbats hårdast i samband med pandemin (covid-19). Många bussreseföretag är små och medelstora familjeföretag med låga marginaler. Redan vid pandemins början i mars 2020 lyftes en oro för framtiden bland dessa företag. Över ett år senare står stora delar av verksamheterna helt eller delvis stilla på grund av rådande restriktioner och osäkerheten i

Heat transfer deterioration in upward and downward pipe flows of supercritical n-decane for actively regenerative cooling

In this paper, we consider the flow and heat transfer behaviour of turbulent upward and downward flows of supercritical n-decane, in order to reveal the features of heat transfer deterioration (HTD) that would be expected in relevant active regenerative cooling systems for scramjet engines. Specific focus is placed on key velocity-field features that appear in these flows. Following the validation

Topology optimization of bistable elastic structures — An application to logic gates

In this paper, bistable gates which can be used as building blocks in logic gates are designed using topology optimization. The gate simulation is based on finite strain kinematics and hyperelastic material response. The objective of the optimization is to maximize the stiffness of a gate in the stable configurations while ensuring an adequate energy and distance separations between them and const

Diffusion of biogas for freight transport in Sweden : A user perspective

Current freight transport is highly dependent on fossil fuels and there is a need for a transition to alternative fuels and technologies. Biogas is a type of biofuel that has the potential to reduce climate emissions from freight transport, while providing additional benefits such as recycling of nutrients and increased energy security. This paper uses theories on the diffusion of green technologi

Diffusion-informed spatial smoothing of fMRI data in white matter using spectral graph filters

Brain activation mapping using functional magnetic resonance imaging (fMRI) has been extensively studied in brain gray matter (GM), whereas in large disregarded for probing white matter (WM). This unbalanced treatment has been in part due to controversies in relation to the nature of the blood oxygenation level-dependent (BOLD) contrast in WM and its detectability. However, an accumulating body of

Probabilistic approach to geomagnetic field modelling of data with age uncertainties and post-depositional magnetisations

Holocene geomagnetic field models are used to study processes in Earth's core, millennial scale variations in solar activity and to relatively date geological and archaeological archives. Constructing models from magnetic field directions and intensities stored in archaeological artefacts, igneous rocks and sediment records is challenging due to the sparse data distribution and the large chronolog

The γ-tubulin meshwork assists in the recruitment of PCNA to chromatin in mammalian cells

Changes in the location of γ-tubulin ensure cell survival and preserve genome integrity. We investigated whether the nuclear accumulation of γ-tubulin facilitates the transport of proliferating cell nuclear antigen (PCNA) between the cytosolic and the nuclear compartment in mammalian cells. We found that the γ-tubulin meshwork assists in the recruitment of PCNA to chromatin. Also, decreased levels