Insulin-regulated facilitative glucose transporter. D-glucose(out) = D-glucose(in) Localizes primarily perinuclear region in the absence of insulin. Expressed in the main insulin-sensitive tissues, such as cardiac muscle, skeletal muscle and adipose tissue. Morpholino knockdown of the protein impairs the development of the embryonic heart resulting in abnormal valve formation (PubMed:25326603). Embryos also show poor glycemic control (PubMed:25326603). Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family. Glucose transporter subfamily.