Search results for "Interaction"
showing 10 items of 5710 documents
Non-
2017
Nitrogen sources in the must are important for yeast metabolism, growth, and performance, and wine volatile compounds profile. Yeast assimilable nitrogen (YAN) deficiencies in grape must are one of the main causes of stuck and sluggish fermentation. The nitrogen requirement of Saccharomyces cerevisiae metabolism has been described in detail. However, the YAN preferences of non-Saccharomyces yeasts remain unknown despite their increasingly widespread use in winemaking. Furthermore, the impact of nitrogen consumption by non-Saccharomyces yeasts on YAN availability, alcoholic performance and volatile compounds production by S. cerevisiae in sequential fermentation has been little studied. With…
Characterisation of NO synthases from the alga Klebsormidium nitens
2022
Nitric oxide (NO) is an important cellular signaling molecule regulating various physiological processes, in both animals and plants. In animals, NO synthesis is mainly catalyzed by NO synthase (NOS) enzymes. In plants, NOS-like activities sensitive to mammalian NOS inhibitors have been measured, although no sequences encoding mammalian NOS have been found in land plants. Interestingly, we identified NOS-like sequences in about twenty algae species. These latter include the filamentous Charophyta green algae Klebsormidium nitens, a biological model to study the early transition step from aquatic algae to land plants. Currently, two NOS were identified in K. nitens genome: i) KnNOS1 which po…
Cytoplasmic Parvovirus Capsids Recruit Importin Beta for Nuclear Delivery
2019
Parvoviruses are an important platform for gene and cancer therapy. Their cell entry and the following steps, including nuclear import, are inefficient, limiting their use in therapeutic applications. Two models exist on parvoviral nuclear entry: the classical import of the viral capsid using nuclear transport receptors of the importin (karyopherin) family or the direct attachment of the capsid to the nuclear pore complex leading to the local disintegration of the nuclear envelope. Here, by laser scanning confocal microscopy and in situ proximity ligation analyses combined with coimmunoprecipitation, we show that infection requires importin β-mediated access to the nuclear pore complex and …
Superallowed α Decay to Doubly Magic 100Sn
2018
We report the first observation of the 108Xe→104Te→100Sn α-decay chain. The α emitters, 108Xe [Eα=4.4(2) MeV, T1/2=58+106−23 μs] and 104Te [Eα=4.9(2) MeV, T1/2<18 ns], decaying into doubly magic 100Sn were produced using a fusion-evaporation reaction 54Fe(58Ni,4n)108Xe, and identified with a recoil mass separator and an implantation-decay correlation technique. This is the first time α radioactivity has been observed to a heavy self-conjugate nucleus. A previous benchmark for study of this fundamental decay mode has been the decay of 212Po into doubly magic 208Pb. Enhanced proton-neutron interactions in the N=Z parent nuclei may result in superallowed α decays with reduced α-decay wi…
Multidimensionality and intra-individual variation in host manipulation by an acanthocephalan
2008
Parasitology, 135 (5)
Defining gut mycobiota for wild animals: a need for caution in assigning authentic resident fungal taxa
2021
Animal gut mycobiota, the community of fungi that reside within the gastrointestinal tract, make an important contribution to host health. Accordingly, there is an emerging interest to quantify the gut mycobiota of wild animals. However, many studies of wild animal gut mycobiota do not distinguish between the fungi that likely can reside within animal gastrointestinal tracts from the fungal taxa that are non-residents, such as macrofungi, lichens or plant symbionts/pathogens that can be ingested as part of the host’s diet. Confounding the non-resident and resident gut fungi may obscure attempts to identify processes associated with the authentic, resident gut mycobiota per se. To redress th…
Protein-membrane interaction: insights from advanced microscopy
2017
The interaction between proteins and membranes is sub ject of renewed interest in biomedical and biotechnologi cal research for its implication in many functional and dys functional processes and for its pharmaceutical applications. It has been shown that the interaction between amyloido genic proteins and membranes results in mutually destruc tive structural perturbations. The study we present is focused on the interaction between synthetic model membranes and alpha-lactalbumin (α-La), widely studied for its biolog ical function since it can induce apoptosis in tumor cells. Upon α-La addition to giant vesicles (GVs) samples, the sys tem has been characterized by means of spectroscopy meth …
Spatialité, participation et déploiement : la reprise du contact du personnel de service à la table des clients lors d’un repas au restaurant
2014
1. Introduction Ce chapitre propose de se focaliser sur un problème pratique rencontré de manière récurrente par les participants à l’interaction lors d’un repas au restaurant. Il s’agit d’analyser, de manière systématique, comment le personnel de service rétablit le contact avec le(s) client(s) à plusieurs reprises durant le repas avec une focale particulière sur les modalités par lesquelles le personnel de service initie régulièrement l’interaction avec les clients à la table afin de mener ...
Segesta e il mondo greco coloniale attraverso lo studio delle anfore greco-occidentali da aree sacre: primi dati
2020
Lo studio riguarda le anfore vinarie di produzione greco-occidentale provenienti da due aree sacre di età arcaica e classica di Segesta, per le quali disponiamo di dati archeologici, sinora rimasti inediti: l’area sacra sull’Acropoli Nord documentata dal cosiddetto scarico di Grotta Vanella e il santuario extraurbano di contrada Mango. I reperti anforici sono stati studiati secondo le norme del progetto FA- CEM e sono stati attribuiti a tipologie e produzioni più o meno note. Lo studio di tali reperti inediti è stato affiancato da una revisione sistematica delle anfore greco-occidentali segestane già edite, rinvenute negli scavi stratigrafici condotti negli anni Novanta del secolo scors…
The interplay of intrinsic need satisfaction and Facebook specific motives in explaining addictive behavior on Facebook
2014
We conducted an online survey with 581 SNS users.We developed a scale measuring SNS addiction.SNS specific motives mediate the effect of intrinsic needs on SNS addiction.People try to compensate thwarted intrinsic needs with gratifications from SNS use.Gratifications sought from SNS use can cause addictive SNS usage patterns. The present paper aims at exploring the new phenomenon of social network site (SNS) addiction and at identifying predictors of problematic SNS use. For this purpose, a scale measuring addictive behavior specifically with regard to SNS use was developed. The effects of intrinsic need satisfaction in the offline context and of SNS-specific motives on SNS addiction were t…