Tiziana Ventriglia

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ADP-glucose pyrophoshorylase (ADP-Glc PPase) catalyzes the first and limiting step in starch biosynthesis. In plants, the enzyme is composed of two types of subunits (small and large) and is allosterically regulated by 3-phosphoglycerate and phosphate. The pattern of expression and sugar regulation of the six Arabidopsis thaliana ADP-Glc PPase-encoding(More)
ADP-glucose (Glc) pyrophosphorylase (ADP-Glc PPase) catalyzes the first committed step in starch biosynthesis. Higher plant ADP-Glc PPase is a heterotetramer (alpha(2)beta(2)) consisting of two small and two large subunits. There is increasing evidence that suggests that catalytic and regulatory properties of the enzyme from higher plants result from the(More)
In higher plants, ADP-glucose pyrophosphorylase (ADPGlc-PPase) is a heterotetrameric enzyme comprised of two small and two large subunits. Potato-Arabidopsis hybrid ADPGlc-PPases were generated and their regulatory properties analyzed. We show that ADPGlc-PPase subunits from two different species can interact, producing active enzymes with new regulatory(More)
The interaction of glimepiride with b-cyclodextrin (b-CD) has been studied by several analytical techniques, including 1H NMR, infrared spectroscopy (FTIR), powder x-ray diffractometry (XRD), thermal analysis (DSC) and scanning electron microscopy (SEM). The existence of an inclusion complex was proved in solution by phase solubility techniques and 1H NMR,(More)
Running title: Hybrid Arabidopsis-potato ADPGlc-PPase regulation Corresponding author: José M. Romero Instituto de Bioquímica Vegetal y Fotosíntesis Centro de Investigaciones Científicas Isla de la Cartuja Universidad de Sevilla-C.S.I.C. c/ Americo Vespucio No 49, 41092-Sevilla, Spain Telf.: +34-954489526 Fax: + 34-954460065 E-mail: jmromero@ibvf.csic.es(More)
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