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| Registros recuperados: 19 | |
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| Ehsani, P.; Meunier, A.; Nato, F.; Old, I.; Jafari, A.; Dartevelle, S.; Mazie, J.C.; Ducreux, G.; Lafaye, P.; Nato, A.. |
| Tipo: Text |
Palavras-chave: TABAC; TRANSFERT DE GENE; REGENERATION; MICROPROPAGATION; BIOSYNTHESE; ANTICORPS; ETUDE EXPERIMENTALE; PLANTE TRANSGENIQUE; INTERLEUKINE; EXPRESSION DES GENES; PROTEINE RECOMBINEE. |
| Ano: 2001 |
URL: http://www.documentation.ird.fr/hor/fdi:010028510 |
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| Lorquin, Jean; Francey, Y.; Chrestin, Hervé. |
| Une NAD kinase (EC 2.7.1.23) a été mise en évidence dans le latex d'#Hevea brasiliensis$. Elle est localisée dans la fraction membranaire de latex ultracentrifugé et serait liée soit aux lutoïdes (microvacuoles lysosomales) soit à une autre structure membranaire et catalyse la formation du NADP faiblement présent dans le cytosol (< 1 microM). Le pH optimal de son activité est 8,0 et l'affinité de l'enzyme à ce pH est comprise entre 0,5 et 1,0 mM pour le NAD et entre 1,0 et 1,5 mM pour l'ATP. Il s'agit d'une enzyme de type allostérique présentant une coopérativité positive aux faibles concentrations en substrats. En régénérant du NADP(H), molécule activatrice et cofacteur d'enzymes clefs de la biosynthèqe du caoutchouc, cette enzyme pourrait jouer un... |
| Tipo: Text |
Palavras-chave: LATEX; ENZYME; IDENTIFICATION DE SUBSTANCE CHIMIQUE; LOCALISATION; CAOUTCHOUC; BIOSYNTHESE; METHODOLOGIE; NAD KINASE; BIOCHIMIE CELLULAIRE. |
| Ano: 1987 |
URL: http://www.documentation.ird.fr/hor/fdi:25105 |
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| Larbat, R.; Kellner, S.; Specker, S.; Hehn, A.; Gontier, E.; Hans, J.; Bourgaud, F.; Matern, U.. |
| Ammi majus L. accumulates linear furanocoumarins by cytochrome P450 (CYP)-dependent conversion of 6-prenylumbelliferone via (+)-marmesin to psoralen. Relevant activities, i.e. psoralen synthase, are induced rapidly from negligible background levels upon elicitation of A. majus cultures with transient maxima at 9-10 h and were recovered in labile microsomes. Expressed sequence tags were cloned from elicited Ammi cells by a nested DD-RT-PCR strategy with CYP-specific primers, and full-size cDNAs were generated from those fragments correlated in abundance with the induction profile of furanocoumarin-specific activities. One of these cDNAs representing a transcript of maximal abundance at 4 h of elicitation was assigned CYP71AJ1. Functional expression in... |
| Tipo: Journal Article |
Palavras-chave: FURANOCOUMARINE; BIOSYNTHESE; PSORALENE SYNTHASE; MONOOXYGENASE; CLONAGE MOLECULAIRE; EXPRESSION FONCTIONNELLE; LEVURE AMMI MAJUS; ESCHERICHIA COLI. |
| Ano: 2007 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20072b85351f&uri=/notices/prodinra1/2010/11/ |
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| Christen, Pierre. |
| The fermentation of solid raw materials has been used for a long time to improve the organoleptic quality of food. Some examples come from traditional fermented food in Asia, Europe and America. Many microorganisms such as lactic bacteria (vegetables, dairy products, meat), some yeasts (bread) and various filamentous fungi (cheeses) are involved in these natural processes. In this paper are presented some examples of the use of microorganisms for the generation of aroma in solid medium. This includes the direct production in the raw material, the biosynthesis of specific molecules and the bioconversion of precursors into molecules of powerful aroma. Spacial interest is given to the activities developped in this field within the cooperation accords between... |
| Tipo: Text |
Palavras-chave: FERMENTATION EN MILIEU SOLIDE; PRODUIT ALIMENTAIRE; MICROORGANISME; BIOSYNTHESE; AROME. |
| Ano: 1995 |
URL: http://www.documentation.ird.fr/hor/fdi:010006795 |
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| Registros recuperados: 19 | |
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