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Solubilización y caracterización de la actividad trehalasa ligada a la pared celular de ascosporas de schizzosaccharomyces pombe

Authors: Gacto Fernández, Mariano José; Vicente Soler, Jerónima;

Solubilización y caracterización de la actividad trehalasa ligada a la pared celular de ascosporas de schizzosaccharomyces pombe

Abstract

Se ha investigado la localización de la trehalasa en ascosporas aisladas de Schiiosacchar~omycfs pombe mediante un método citoquímico basado en la formación de complejos insolubles de eugenol, producidos extracelularmente en una reacción acoplada a la actividad trehalasa. La mayor parte de la actividad enzimática detectable en extractos celulares está unida a la pared celular de las ascosporas. Por tratamiento controlado de paredes celulares con el sistema Iítico iiovoenzima es posible lograr una solubilización parcial de la trehalasa particulada. El perfil de elución obtenido por filtración molecular del enzima solubilizado de paredes indica una amplia heterogeneidad molecular, lo que sugiere una posible naturaleza glicoproteica del enzima. Los ensayos de activación y el análisis de propiedades cinéticas revelan que esta actividad se debe a una trehalasa de las pertenecientes al tipo no regulador

The location of trehalase in isolated ascospores from Schizosacchar-omyces pombe has been investigated by a cytochemical method based on the formation by eugenol of insoluble complexes that are produced extracellularly during a reaction coupled to the trehalase activity. Most of the enzyme activity present in cell extracts is linked to the ascospore cell wall. A partial solubilization of the particulate trehalase was achieved by controlled treatment of isolated cell walls with the lytic system novozym. The elution pattern obtaiiled by molecular filtration of the enzyme solubilized from the walls shows a broad molecular heterogeneity suggesting a possible glycoprotein nature of the enzyme. Assays for activation and analysis of kinetic properties revealed that this activity is due to a trehalase of the so-called nonregulatory type

Country
Spain
Related Organizations
Keywords

Enzimas, Pared celular, Schizosaccharomyces pombe, Cell wall, CDU::5 - Ciencias puras y naturales::58 - Botánica, Trehalasa, Novozym

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green