Sucrose Transporter
Mostrando 13-24 de 73 artigos, teses e dissertações.
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13. Evolutionary matches of enzyme and transporter capacities to dietary substrate loads in the intestinal brush border
Safety factors of enzymes and transporters are defined as the ratio of Vmax (maximal reaction rates at high substrate concentrations) to the reaction rate under actual physiological conditions. Although corresponding safety factors have been measured for macroscopic biological structures and for human-engineered structures, safety factors have been little st
The National Academy of Sciences.
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14. Sugar Uptake and Transport in Rice Embryo. Expression of Companion Cell-Specific Sucrose Transporter (OsSUT1) Induced by Sugar and Light1
We investigated sugar uptake and transport in rice (Oryza sativa) embryo during grain germination. Endogenous sugar levels, accumulation of starch granules, and gene expression of a rice sucrose transporter (OsSUT1) were examined using rice embryos germinated with or without exogenous sugar supply. Starch granules remarkably accumulated in the cells around v
American Society of Plant Physiologists.
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15. Wounding Enhances Expression of AtSUC3, a Sucrose Transporter from Arabidopsis Sieve Elements and Sink Tissues1
The Arabidopsis AtSUC3 gene encodes a sucrose (Suc) transporter that differs in size and intron number from all other Arabidopsis Suc transport proteins. Each plant species analyzed so far possesses one transporter of this special type, and several functions have been discussed for these proteins, including the catalysis of transmembrane Suc transport, and a
The American Society for Plant Biologists.
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16. Fusion to GFP blocks intercellular trafficking of the sucrose transporter SUT1 leading to accumulation in companion cells
BioMed Central.
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17. The Sucrose Transporter of Celery. Identification and Expression during Salt Stress1
In celery (Apium graveolens L.), long-distance transport of reduced carbon occurs both in the form of sucrose (Suc) and mannitol. The presence of mannitol has been related to the resistance of celery to salt stress. To investigate the transport events occurring during salt stress, we have cloned the H+/Suc transporter of celery AgSUT1 (A. graveolens Suc upta
American Society of Plant Physiologists.
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18. Regulation of Root Ion Transporters by Photosynthesis: Functional Importance and Relation with Hexokinase
Coordination between the activity of ion transport systems in the root and photosynthesis in the shoot is a main feature of the integration of ion uptake in the whole plant. However, the mechanisms that ensure this coordination are largely unknown at the molecular level. Here, we show that the expression of five genes that encode root NO3−, NH4+, and SO42�
American Society of Plant Biologists.
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19. AmSUT1, a Sucrose Transporter in Collection and Transport Phloem of the Putative Symplastic Phloem Loader Alonsoa meridionalis1
A sucrose (Suc) transporter cDNA has been cloned from Alonsoa meridionalis, a member of the Scrophulariaceae. This plant species has an open minor vein configuration and translocates mainly raffinose and stachyose in addition to Suc in the phloem (C. Knop, O. Voitsekhovskaja, G. Lohaus [2001] Planta 213: 80–91). These are typical properties of symplastic p
The American Society for Plant Biologists.
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20. A Potential Pathway for Galactose Metabolism in Cucumis sativus L., A Stachyose Transporting Species 1
Conversion of [14C]galactose (Gal) 1-P, UDP-[14C]Gal, or UDP-[14C]glucose to [14C]sucrose was observed when cell-free homogenates of cucumber (Cucumis sativus L.) fruit peduncles were incubated with individual 14C-labeled substrates, appropriate cofactors, and fructose. The sucrose product was labeled only in the glucose moiety. Conversion of [14C]Gal-1-P to
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21. Sucrose is a signal molecule in assimilate partitioning
The proton–sucrose symporter mediates the key transport step in the resource distribution system that allows many plants to function as multicellular organisms. In the results reported here, we identify sucrose as a signaling molecule in a previously undescribed signal-transduction pathway that regulates the symporter. Sucrose symporter activity declined i
The National Academy of Sciences.
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22. Energy-linked Sulfate Uptake by Corn Mitochondria via the Phosphate Transporter 1
Corn shoot mitochondria possess an energy-linked transport system for sulfate uptake as demonstrated by osmotic swelling and [35S]SO42− accumulation. Maximum uptake is secured in the presence of Mg2+ and oligomycin with sucrose for osmotic support. Neither phosphate nor dicarboxylate anions are required. When added simultaneously, millimolar concentrations
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23. Isolation, purification, and reconstitution of the Na+ gradient-dependent Ca2+ transporter (Na+-Ca2+ exchanger) from brain synaptic plasma membranes.
A [Na+]-gradient-dependent Ca2+ transporter from brain synaptic plasma membranes has been isolated, purified, and reconstituted into brain phospholipid vesicles. The purification was achieved by sucrose-gradient centrifugation after solubilization of the synaptic membranes in cholate in the presence of a 30-fold excess (by weight) of added brain phospholipid
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24. Molecular cloning, immunochemical localization to the vacuole, and expression in transgenic yeast and tobacco of a putative sugar transporter from sugar beet.
Several plant genes have been cloned that encode members of the sugar transporter subgroup of the major facilitator superfamily of transporters. Here we report the cloning, expression, and membrane localization of one of these porters found in sugar beet (Beta vulgaris L.). This clone, cDNA-1, codes for a protein with 490 amino acids and an estimated molecul