2006
DOI: 10.2225/vol9-issue3-fulltext-21
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Sunflower storage proteins are transported in dense vesicles that contain proteins homologous to the pumpkin vacuolar sorting receptor PV 72

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Cited by 4 publications
(4 citation statements)
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“…PV72, a pumpkin homologue of VSR, was identified in the precursor‐accumulating compartments that are proposed as intermediates in the transport of storage proteins to the PSV . Similar results have been found in sunflower and castor bean . By contrast to the vacuolar sorting receptor BP80, ligand binding to PV72 is calcium‐dependent because it is released at a low calcium concentration.…”
Section: Sorting Of Proteins To Plant Vacuolessupporting
confidence: 71%
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“…PV72, a pumpkin homologue of VSR, was identified in the precursor‐accumulating compartments that are proposed as intermediates in the transport of storage proteins to the PSV . Similar results have been found in sunflower and castor bean . By contrast to the vacuolar sorting receptor BP80, ligand binding to PV72 is calcium‐dependent because it is released at a low calcium concentration.…”
Section: Sorting Of Proteins To Plant Vacuolessupporting
confidence: 71%
“…A). Protein transport to the PSV mainly occurs through aggregation sorting, although receptor‐mediated sorting might play a role as well . In this case, the involved VSRs are BP80 homologues (such as PV72, AtELP1) and RMRs .…”
Section: Sorting Of Proteins To Plant Vacuolesmentioning
confidence: 99%
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“…Cabe aclarar que aunque PSV es una organela típica de semillas, la coexistencia de estas y vacuolas líticas ha sido observada en células de la punta de raíz (Paris et al,1996) y de la aleurona de cebada (Swanson et al, 1998), en células de mesófilo en empalizada y esponjoso de hojas de tabaco (Di Sansebastiano et al, 1998, Park et al, 2004) y de poroto (Park et al, 2004) y, en meristemas de raíz en plántulas de cebada y _______________________________________________________________________________________________ _______________________________________________________________________________________________ -70 -arveja (Olbrich et al, 2007) en cambio, en células de mesófilo de arabidopsis se observa un único tipo vacuolar (Park et al, 2004), de ahí el interés que se puso en este trabajo en generar plantas transgénicas para estudiar el direccionamiento de proteínas reporteras en distintos tipos celulares. También es importante aclarar que aunque actualmente el modelo más aceptado para el transporte de proteínas solubles a PSV es por una vía que atraviesa el aparato de Golgi como ha sido probado en arveja, tabaco, arabidopsis y girasol (Hinz et al, 1999, Park et al, 2004Otegui et al, 2006, Molina et al, 2006 en zapallo (Cucurbita maxima) se ha descripto un transporte directo del retículo endoplásmico a PSV en vesículas denominadas PAC (precursor accumulating vesicles) (Hara-Nishimura et al, 1998;). También se ha mostrado la existencia de vía Golgi independiente en Vigna mungo (Okamoto et al, 2003) donde vesículas denominadas KDEL, transportan endopeptidasas a PSV en semillas en germinación.…”
Section: Ii1 Introducciónunclassified