Facilitative glucose transporter that can also mediate the uptake of various other monosaccharides across the cell membrane. Localized to densely spaced patches along neuronal processes. Transport is mediated via a series of conformation changes, switching between a conformation where the substrate-binding cavity is accessible from the outside, and a another conformation where it is accessible from the cytoplasm. Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family. Glucose transporter subfamily.