Probable sugar transporter that acts as a regulator of glycolysis in macrophages (PubMed:30431159). Does not transport glucose (By similarity). Mainly expressed in brain and spleen (PubMed:29664675). Also expressed in lung, heart, muscle, liver, kidney, fat, whole blood, testes, ovaries and uterus (PubMed:29664675). Mild metabolic effects (PubMed:29664675, PubMed:30431159). Mice grow normally and glucose metabolism in male or female mice is normal (PubMed:29664675). Minimal metabolic effects are observed: female mice display a minor decrease in fat accumulation when fed Western diet and have a lower respiratory exchange ratio when fed chow diet (PubMed:29664675). Mice also exhibit a subtle phenotype in response to lipopolysaccharide administration, characterized by slight changes in the metabolome associated with glycolysis (PubMed:30431159). Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family.