366 research outputs found

    The impact of supply chain-related factors on the environmental performance of manufacturing firms in Turkey

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    This paper investigates the impact of supply chain-related factors on the adoption of proactive environmental strategies, and the impact of such strategies on environmental investments and environmental performance. Data were collected from 96 Turkish manufacturers using an online questionnaire. The model was tested with PLS, a structural equation modelling method. The results show that a proactive environmental strategy leads to higher environmental investments which in turn lead to higher environmental performance. The results also show that two supply chain-related factors, organizational commitment and collaboration with suppliers, positively impact proactivity, whereas customer pressure does not have any significant direct impact on proactivity but it does positively impact environmental investments

    Submission of structural biology data for review purposes.

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    The editors discuss the submission of structural biology data

    Spain's Budget Neglects Research

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    Letter.-- Carlos Fenollosa et al.Peer Reviewe

    The Role of Compensatory Beliefs in Rationalizing Environmentally Detrimental Behaviors

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    Compensatory green beliefs (CGBs) reflect the idea that a pro-environmental behavior (e.g., recycling) can off-set the negative effects of an environmentally detrimental behavior (e.g., driving). It is thought that CGBs might help explain why people act in ways that appear to contradict their pro-environmental intentions, and inconsistently engage in pro-environmental behaviors. The present study sought to investigate the nature and use of CGBs. A series of interviews suggested that participants endorsed CGBs to: (a) reduce feelings of guilt with respect to (the assumed or actual) negative environmental impact of their actions, and (b) to defend their green credentials in social situations. Participants also justified detrimental behaviors on the basis of higher loyalties (e.g., family’s needs), or the perceived difficulty of performing more pro-environmental actions. In addition to shedding light on how, when, and why people might hold and use CGBs, the research also provides new insight into how CGBs should be assessed

    Site-specific perturbations of alpha-synuclein fibril structure by the Parkinson's disease associated mutations A53T and E46K.

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    PMCID: PMC3591419This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Parkinson's disease (PD) is pathologically characterized by the presence of Lewy bodies (LBs) in dopaminergic neurons of the substantia nigra. These intracellular inclusions are largely composed of misfolded α-synuclein (AS), a neuronal protein that is abundant in the vertebrate brain. Point mutations in AS are associated with rare, early-onset forms of PD, although aggregation of the wild-type (WT) protein is observed in the more common sporadic forms of the disease. Here, we employed multidimensional solid-state NMR experiments to assess A53T and E46K mutant fibrils, in comparison to our recent description of WT AS fibrils. We made de novo chemical shift assignments for the mutants, and used these chemical shifts to empirically determine secondary structures. We observe significant perturbations in secondary structure throughout the fibril core for the E46K fibril, while the A53T fibril exhibits more localized perturbations near the mutation site. Overall, these results demonstrate that the secondary structure of A53T has some small differences from the WT and the secondary structure of E46K has significant differences, which may alter the overall structural arrangement of the fibrils

    Structure and N-acetylglucosamine binding of the distal domain of mouse adenovirus 2 fibre

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    15 pags, 8 figsMurine adenovirus 2 (MAdV-2) infects cells of the mouse gastrointestinal tract. Like human adenoviruses, it is a member of the genus Mastadenovirus, family Adenoviridae. The MAdV-2 genome has a single fibre gene that expresses a 787 residue-long protein. Through analogy to other adenovirus fibre proteins, it is expected that the carboxy-terminal virus-distal head domain of the fibre is responsible for binding to the host cell, although the natural receptor is unknown. The putative head domain has little sequence identity to adenovirus fibres of known structure. In this report, we present high-resolution crystal structures of the carboxy-terminal part of the MAdV-2 fibre. The structures reveal a domain with the typical adenovirus fibre head topology and a domain containing two triple ß-spiral repeats of the shaft domain. Through glycan microarray profiling, saturation transfer difference nuclear magnetic resonance spectroscopy, isothermal titration calorimetry and site-directed mutagenesis, we show that the fibre specifically binds to the monosaccharide N-acetylglucosamine (GlcNAc). The crystal structure of the complex reveals that GlcNAc binds between the AB and CD loops at the top of each of the three monomers of the MAdV-2 fibre head. However, infection competition assays show that soluble GlcNAc monosaccharide and natural GlcNAc-containing polymers do not inhibit infection by MAdV-2. Furthermore, site-directed mutation of the GlcNAc-binding residues does not prevent the inhibition of infection by soluble fibre protein. On the other hand, we show that the MAdV-2 fibre protein binds GlcNAc-containing mucin glycans, which suggests that the MAdV-2 fibre protein may play a role in viral mucin penetration in the mouse gut.This research was sponsored by grant BFU2014-53425-P (to M. J. v. R.), coordinated grants CTQ2015-64597-P-C02-01 and CTQ2015-64597-P-C02-02 (to J. J. B. and F. J. C., respectively), grant BFU2015-70052-R (to M. M.) and the Spanish Adenovirus Network (AdenoNet, BIO2015-68990-REDT), all from the Spanish Agencia Estatal de Investigación. Financial support to M. M. from the CIBER of Respiratory Diseases (CIBERES) from the Spanish Institute of Health Carlos III is also acknowledged. These grants are co-financed by the European Regional Development Fund of the European Union. A. K. S. and T. H. N. were recipients of pre-doctoral fellowships from La Caixa and CSIC-VAST, respectively. The expression vectors were designed and created in Hungary, and this was financed by the Hungarian Scientific Research Fund (OTKA K100163). M. K. thanks Enterprise Ireland for a Commercialisation Fund grant (CF/2015/0089), A. K. acknowledges the National University of Ireland for a Cancer Care West Hardiman PhD scholarship and L. J. acknowledges the EU FP7 programme in support of the GlycoHIT consortium (grant no. 260600). This work was supported by R01 AI104920 (to J. G. S.) from the National Institute for Allergy and Infectious Diseases (www.niaid.nih.gov). S. S. W. was also supported by the Helen Riaboff Whiteley Endowment to the University of Washington and by Public Health Service, National Research Service Awards T32 AI083203 from the National Institute for Allergy and Infectious Diseases and T32 GM007270 from the National Institute of General Medical Sciences
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