SemiSWEET-SWEET Glucoside Transporter Superfamily (SLC50)

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Encyclopedia of Biophysics

Synonyms

SWEET = Sugars Will Eventually be Exported Transporters

Definition

SWEET transporters = a family of transporters for glycosides that typically use a uniport transport mechanism. Their physiological function is often in cellular efflux, for example, as the first step in phloem loading in plants, but can also be in cellular import, for example, into the endosperm in maize:

$$ \mathrm{sugar}\ \left(\mathrm{in}\right)\to \mathrm{sugar}\ \left(\mathrm{out}\right);\mathrm{sugar}\ \left(\mathrm{out}\right)\to \mathrm{sugar}\ \left(\mathrm{in}\right) $$

Soluble carbohydrates, principally derived from photosynthesis, serve as the preferred form of carbon nutrient for many unicellular organisms and as the dominant transport form for carbon and energy in multicellular organisms. Almost all cells from all kingdoms use carrier proteins to transport soluble carbohydrates across the lipid bilayers that enclose their cytoplasm (Chen et al. 2015a). Today, at least five classes of carriers...

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Correspondence to Wolf B. Frommer .

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© 2018 European Biophysical Societies' Association (EBSA)

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Sosso, D., Chen, LQ., Frommer, W.B. (2018). SemiSWEET-SWEET Glucoside Transporter Superfamily (SLC50). In: Roberts, G., Watts, A. (eds) Encyclopedia of Biophysics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35943-9_685-1

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  • DOI: https://doi.org/10.1007/978-3-642-35943-9_685-1

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  • Print ISBN: 978-3-642-35943-9

  • Online ISBN: 978-3-642-35943-9

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