Literatura científica selecionada sobre o tema "Cellulase – Sécrétion – Analyse"
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Artigos de revistas sobre o assunto "Cellulase – Sécrétion – Analyse"
DUCROT, C. "Chapitre 2 : La protéine prion cellulaire (PrPc) : propriétés et rôle physiologique". INRAE Productions Animales 17, HS (20 de dezembro de 2004). http://dx.doi.org/10.20870/productions-animales.2004.17.hs.3623.
Texto completo da fonteDUCROT, C., J. CHARLEY-POULAIN e J. M. AYNAUD. "Numéro hors série 2004 : Encéphalopathies spongiformes transmissibles animales -Sommaire et avant-propos". INRAE Productions Animales 17, HS (18 de dezembro de 2004). http://dx.doi.org/10.20870/productions-animales.2004.17.hs.3612.
Texto completo da fonteTeses / dissertações sobre o assunto "Cellulase – Sécrétion – Analyse"
Bortoli-German, Isabelle. "Analyse moléculaire et génétique de l'activité et de la secrétabilité de la cellulase EGZ de Erwinia chrysanthemi". Aix-Marseille 1, 1994. http://www.theses.fr/1994AIX11011.
Texto completo da fonteAlharake, Jawad. "Study of genetic factors involved in enzyme secretion in hyperproductive strains of Trichoderma reesei". Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASB061.
Texto completo da fonteFossil fuels are a major contributor to global warming, and their non-renewable nature is an impediment for building sustainable societies. In this context, second generation biofuels represent an attractive and more environmentally friendly alternative. The process of second-generation biofuel production consists of several steps including a physicochemical pretreatment of lignocellulosic (non-edible) biomass, the enzymatic hydrolysis of cellulose into glucose and the fermentation of simple sugars into biofuels, such as bioethanol. One of the main bottlenecks for a large implementation of this process is, however, the relatively high cost of hydrolytic enzymes, namely cellulases, used to deconstruct the pretreated lignocellulosic biomass into fermentable sugars.The filamentous fungus Trichoderma reesei is the preferred choice for industrial production of cellulases since it has hyperproduction and hypersecretion capacities. Industrial strains of T. reesei can secrete up to 100 g/L of cellulases in controlled industrial fermenters. In particular, the mutant strain Rut- C30 is a reference hyperproducer strain, but our incomplete understanding of its enhanced secretion system complicates further improvement of its hypersecretion capacity by genetic engineering. Therefore, this work aimed at unravelling the regulatory pathways controlling secretion and the secretion stress response in order to identify bottlenecks and to develop new strains with enhanced secretion capacity in the future.To this end, transcriptomic data were generated from cultivations of T. reesei Rut-C30 in different secretion stress conditions which allowed to identify potential components of secretion regulation that were targeted for deletion. As a complementary approach, mining of transcriptomic data obtained with other filamentous fungi in secretion stress conditions revealed further target genes potentially involved in the regulation of the secretion pathway. Finally, nine genes were deleted in the Rut-C30 strain, and the resulting strains phenotypically characterized. All of them displayed reduced growth and showed altered protein secretion behavior. RNA sequencing was performed on ∆res2, ∆rpn4 and ∆snd1 mutant strains and compared to that of Rut-C30 in the same culture conditions. Neither of the three transcription factors impacts transcription of genes involved in secretion or the secretion stress response in our conditions. However, in all three mutants, genes encoding enzymes of lipid metabolism are differentially expressed which could affect secretion in an indirect way. The results represent first clues to alleviate bottlenecks in secretion in T. reesei Rut-C30 and pave the way to develop strains with still improved secretion capacity
Huet, Sébastien. "Analyse des mouvements des granules de sécrétion à proximité de la membrane plasmique par microscopie de fluorescence à excitation par onde évanescente". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2006. http://tel.archives-ouvertes.fr/tel-00090014.
Texto completo da fonteRossignol, Aurore. "Analyse des différences d'invasion cellulaire entre Salmonella gallinarum et Salmonella enteritidis, deux sérotypes génétiquement proches". Thesis, Tours, 2014. http://www.theses.fr/2014TOUR4043.
Texto completo da fonteSalmonella Gallinarum and Salmonella Enteritidis are genetically closed. However, whereas SG induces lethal systemic infection in poultry, SE is responsible for transient systemic infection and asymptomatic intestinal carriage. Moreover, SE is ubiquitous whereas SG is poultry specific. These serotypes also present in vitro differences. We have shown that SG is in vitro less invasive than SE whatever the avian or non-avian cell origin, in spite of SG’s tropism for avian species. T3SS-1, the main invasion factor in Salmonella, is composed of a secretion apparatus and its translocated effectors. We have shown that T3SS-1 components a expressed in a similar way by SE and SG and both harbor a functional secretion apparatus. However, study of T3SS-1 dependent invasion abilities suggested that T3SS-1 is involved in SG’s invasion defect. Sequence analysis has revealed that SG possesses several mutations in genes encoding main T3SS-1 effectors, that could explain the low invasive phenotype
Lecompte, Sophie. "Etude du rôle du gène PROX1 dans le diabète de type 2". Phd thesis, Université du Droit et de la Santé - Lille II, 2012. http://tel.archives-ouvertes.fr/tel-00790524.
Texto completo da fonte