English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/102063
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

The effect of spermidine, spermine and putrescine analogues on the uptake and adsorption of putrescine by the lichen Evernia prunastri

Autor Escribano, M. Isabel ; Balaña-Fouce, Rafael; Legaz, M. E.
Fecha de publicación 1994
EditorElsevier
Citación Plant Physiology and Biochemistry 32: 55- 63 (1994)
ResumenCompetition for putrescine uptake among polyamines and between polyamines and their analogues has been studied in thalli of the lichen Evernia prunastri. Uptake experiments included measurements of both transport and adsorption of putrescine. Spermidine and spermine behaved as competitive inhibitors of putrescine transport, with K-i values of 1.55 mM and 1.34 mM, respectively. Basic amino acids, such as arginine, ornithine and lysine did not seem to compete for the same site of transport. Furthermore, putrescine uptake was slowly enhanced by Na+, K+, Ca-2+ and Mg-2+, and diminished by Mn-2+, Ni-2+ and La-3+. About 64% of putrescine taken up by lichen thalli was located in mycobiont cells. No metabolism of putrescine to other polyamines, such as spermidine and spermine, occurred after its uptake.
URI http://hdl.handle.net/10261/102063
Identificadoresissn: 0981-9428
Aparece en las colecciones: (IF) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.