144 research outputs found
âI am your perfect online partner" analysis of dating profiles used in cybercrime
Internet Online Dating has become an influential mainstream social practice facilitating the finding of a partner. Unscrupulous operators have identified its potential and started to use this platform for identity theft in form of so called Online Romance Scams. Quickly, this cybercrime has become very successful and thus, an increasing threat in the social networking environment. So far, very little is known about its structure and the reason for its success, and this needs to be known in order to be able to fight it efficiently. This research tries to contribute to this knowledge, and argues that scammers use so-called âLove Storiesâ, which represent personal affinities related to romantic relationships, to their benefit when tailoring common narratives as part of fraudulent online profiles to attract their victims. We look at these different types of âPersonal Love Storiesâ and discuss how they can be used in this type of scam, followed by a qualitative analysis of fraudulent profiles from three different international websites to examine this assumptio
Online Romance Scam: Expensive e-Living for romantic happiness
The Online Romance Scam is a very successful scam which causes considerable financial and emotional damage to its victims. It is based on building a relationship which establishes a deep trust that causes victims to voluntarily transfer funds to the scammer. The aim of this research is to explore online dating scams as a type of e-Living which initially creates happiness for the victim in a virtual romantic relationship, but tragically then causes the victim to be separated from his or her savings. Using narrative research methodology, this research will establish a model of the romance scam structure and its variations regarding human romantic attitudes, and will develop a theory which explains how the victim is moved through the phases of the scam. Findings of this research will contribute to the knowledge of the Online Romance Scam as e-Crime and provide information about the structure and the development of the modus operandi which can be used to identify an online relationship as a scam at an early phase in order to prevent significant harm to the victim
MSAViewer:interactive JavaScript visualization of multiple sequence alignments
Summary: The MSAViewer is a quick and easy visualization and analysis JavaScript component for Multiple Sequence Alignment data of any size. Core features include interactive navigation through the alignment, application of popular color schemes, sorting, selecting and filtering. The MSAViewer is âweb readyâ: written entirely in JavaScript, compatible with modern web browsers and does not require any specialized software. The MSAViewer is part of the BioJS collection of components. Availability and Implementation: The MSAViewer is released as open source software under the Boost Software License 1.0. Documentation, source code and the viewer are available at http://msa.biojs.net/. Supplementary information: Supplementary data are available at Bioinformatics online. Contact: [email protected]
Assigning protein function from domain-function associations using DomFun
Background: Protein function prediction remains a key challenge. Domain composition affects protein function. Here we present DomFun, a Ruby gem that uses associations between protein domains and functions, calculated using multiple indices based on tripartite network analysis. These domain-function associations are combined at the protein level, to generate protein-function predictions. Results: We analysed 16 tripartite networks connecting homologous superfamily and FunFam domains from CATH-Gene3D with functional annotations from the three Gene Ontology (GO) sub-ontologies, KEGG, and Reactome. We validated the results using the CAFA 3 benchmark platform for GO annotation, finding that out of the multiple association metrics and domain datasets tested, Simpson index for FunFam domain-function associations combined with Stoufferâs method leads to the best performance in almost all scenarios. We also found that using FunFams led to better performance than superfamilies, and better results were found for GO molecular function compared to GO biological process terms. DomFun performed as well as the highest-performing method in certain CAFA 3 evaluation procedures in terms of Fmax and Smin We also implemented our own benchmark procedure, Pathway Prediction Performance (PPP), which can be used to validate function prediction for additional annotations sources, such as KEGG and Reactome. Using PPP, we found similar results to those found with CAFA 3 for GO, moreover we found good performance for the other annotation sources. As with CAFA 3, Simpson index with Stoufferâs method led to the top performance in almost all scenarios. Conclusions: DomFun shows competitive performance with other methods evaluated in CAFA 3 when predicting proteins function with GO, although results vary depending on the evaluation procedure. Through our own benchmark procedure, PPP, we have shown it can also make accurate predictions for KEGG and Reactome. It performs best when using FunFams, combining Simpson index derived domain-function associations using Stoufferâs method. The tool has been implemented so that it can be easily adapted to incorporate other protein features, such as domain data from other sources, amino acid k-mers and motifs. The DomFun Ruby gem is available from https://rubygems.org/gems/DomFun. Code maintained at https://github.com/ElenaRojano/DomFun. Validation procedure scripts can be found at https://github.com/ElenaRojano/DomFun_project
SGCE missense mutations that cause myoclonus-dystonia syndrome impair epsilon-sarcoglycan trafficking to the plasma membrane: modulation by ubiquitination and torsinA
Myoclonus-dystonia syndrome (MDS) is a genetically heterogeneous disorder characterized by myoclonic jerks often seen in combination with dystonia and psychiatric co-morbidities and epilepsy. Mutations in the gene encoding epsilon-sarcoglycan (SGCE) have been found in some patients with MDS. SGCE is a maternally imprinted gene with the disease being inherited in an autosomal dominant pattern with reduced penetrance upon maternal transmission. In the central nervous system, epsilon-sarcoglycan is widely expressed in neurons of the cerebral cortex, basal ganglia, hippocampus, cerebellum and the olfactory bulb. epsilon-Sarcoglycan is located at the plasma membrane in neurons, muscle and transfected cells. To determine the effect of MDS-associated mutations on the function of epsilon-sarcoglycan we examined the biosynthesis and trafficking of wild-type and mutant proteins in cultured cells. In contrast to the wild-type protein, disease-associated epsilon-sarcoglycan missense mutations (H36P, H36R and L172R) produce proteins that are undetectable at the cell surface and are retained intracellularly. These mutant proteins become polyubiquitinated and are rapidly degraded by the proteasome. Furthermore, torsinA, that is mutated in DYT1 dystonia, a rare type of primary dystonia, binds to and promotes the degradation of epsilon-sarcoglycan mutants when both proteins are co-expressed. These data demonstrate that some MDS-associated mutations in SGCE impair trafficking of the mutant protein to the plasma membrane and suggest a role for torsinA and the ubiquitin proteasome system in the recognition and processing of misfolded epsilon-sarcoglycan
The Numbers Behind Mushroom Biodiversity
Fungi are among the most diverse groups of organisms on Earth. with a global diversity estimated at 0.8 million to 5.1 million species. They play fundamental ecological roles as decomposers, mutualists, and pathogens, growing in almost all habitats and being important as sources of food and health benefits, income, and to maintain forest health. Global assessment of wild edible fungi indicate the existence of 2327 useful wild species; 2166 edible and 1069 used as food; 470 medicinal species. Several million tonnes are collected, consumed, and sold each year in over 80 countries. The major mushroom-producing countries in 2012 were China, Italy, USA, and The Netherlands, with 80% of the world production, 64% of which came from China. The European Union produces 24% of the world production. Italy is the largest European producer, Poland is the largest exporter, UK the largest importer.Fungi are difficult to preserve and fossilize and due to the poor preservation of most
fungal structures, it has been difficult to interpret the fossil record of fungi. Hyphae,
the vegetative bodies of fungi, bear few distinctive morphological characteristicss,
and organisms as diverse as cyanobacteria, eukaryotic algal groups, and oomycetes
can easily
be mistaken for them (Taylor & Taylor 1993). Fossils provide minimum
ages for divergences and genetic lineages can be much older than even the oldest
fossil representative found. According to Berbee and Taylor (2010), molecular clocks
(conversion of molecular changes into geological time) calibrated by fossils are the
only available tools to estimate timing of evolutionary events in fossilâpoor groups,
such as fungi.
The arbuscular mycorrhizal symbiotic fungi from the division Glomeromycota, generally
accepted as the phylogenetic sister clade to the Ascomycota and Basidiomycota,
have left the most ancient fossils in the Rhynie Chert of Aberdeenshire in the north of
Scotland (400 million years old). The Glomeromycota and several other fungi have been
found associated with the preserved tissues of early vascular plants (Taylor et al. 2004a).
Fossil spores from these shallow marine sediments from the Ordovician that closely
resemble Glomeromycota spores and finely branched hyphae arbuscules within plant
cells were clearly preserved in cells of stems of a 400 Ma primitive land plant,
Aglaophyton, from Rhynie chert 455â460 Ma in age (Redecker et al. 2000; Remy et al.
1994) and from roots from the Triassic (250â199 Ma) (Berbee & Taylor 2010; Stubblefield
et al. 1987).info:eu-repo/semantics/publishedVersio
Modernism, class and colonialism in Robert Noonanâs The Ragged Trousered Philanthropists
This essay explores Robert Noonanâs 1914 novel, The Ragged Trousered Philanthropists, as a work of Irish modernist fiction. Reading its fragmented narrative as a reflection of the authorâs subaltern position as an Irish republican and socialist, it interprets Noonanâs work as the product of the anticolonial and class struggles in which he was involved. Its critique of capitalist and imperial hegemony and the assertions that suffering, injustice and violence are normal, natural or inevitable phenomena reflects the authorâs frustration, anger and desperation. In this way the novel counters and decentres the bourgeois-imperial dynamic that was reflected in the textual stability of Victorian realism. The Ragged Trousered Philanthropists is an uneasy text that is at once ruptured and uncertain of its own aesthetic status and conveys, through its shifting, episodic plot, the precariousness of a working-class existence permanently poised âon the brink of destitution.â © 2018 Informa UK Limited, trading as Taylor & Francis Grou
Characterization of Granulations of Calcium and Apatite in Serum as Pleomorphic Mineralo-Protein Complexes and as Precursors of Putative Nanobacteria
Calcium and apatite granulations are demonstrated here to form in both human and
fetal bovine serum in response to the simple addition of either calcium or
phosphate, or a combination of both. These granulations are shown to represent
precipitating complexes of protein and hydroxyapatite (HAP) that display marked
pleomorphism, appearing as round, laminated particles, spindles, and films.
These same complexes can be found in normal untreated serum, albeit at much
lower amounts, and appear to result from the progressive binding of serum
proteins with apatite until reaching saturation, upon which the mineralo-protein
complexes precipitate. Chemically and morphologically, these complexes are
virtually identical to the so-called nanobacteria (NB) implicated in numerous
diseases and considered unusual for their small size, pleomorphism, and the
presence of HAP. Like NB, serum granulations can seed particles upon transfer to
serum-free medium, and their main protein constituents include albumin,
complement components 3 and 4A, fetuin-A, and apolipoproteins A1 and B100, as
well as other calcium and apatite binding proteins found in the serum. However,
these serum mineralo-protein complexes are formed from the direct chemical
binding of inorganic and organic phases, bypassing the need for any biological
processes, including the long cultivation in cell culture conditions deemed
necessary for the demonstration of NB. Thus, these serum granulations may result
from physiologically inherent processes that become amplified with calcium
phosphate loading or when subjected to culturing in medium. They may be viewed
as simple mineralo-protein complexes formed from the deployment of
calcification-inhibitory pathways used by the body to cope with excess calcium
phosphate so as to prevent unwarranted calcification. Rather than representing
novel pathophysiological mechanisms or exotic lifeforms, these results indicate
that the entities described earlier as NB most likely originate from calcium and
apatite binding factors in the serum, presumably calcification inhibitors, that
upon saturation, form seeds for HAP deposition and growth. These calcium
granulations are similar to those found in organisms throughout nature and may
represent the products of more general calcium regulation pathways involved in
the control of calcium storage, retrieval, tissue deposition, and disposal
Evaluating the Effects of SARS-CoV-2 Spike Mutation D614G on Transmissibility and Pathogenicity.
Global dispersal and increasing frequency of the SARS-CoV-2 spike protein variant D614G are suggestive of a selective advantage but may also be due to a random founder effect. We investigate the hypothesis for positive selection of spike D614G in the United Kingdom using more than 25,000 whole genome SARS-CoV-2 sequences. Despite the availability of a large dataset, well represented by both spike 614 variants, not all approaches showed a conclusive signal of positive selection. Population genetic analysis indicates that 614G increases in frequency relative to 614D in a manner consistent with a selective advantage. We do not find any indication that patients infected with the spike 614G variant have higher COVID-19 mortality or clinical severity, but 614G is associated with higher viral load and younger age of patients. Significant differences in growth and size of 614G phylogenetic clusters indicate a need for continued study of this variant
What's that gene (or protein)? Online resources for exploring functions of genes, transcripts, and proteins
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