Probable sugar transporter that acts as a regulator of glycolysis in macrophages (Probable). Does not transport glucose (PubMed:30431159). Highly expressed in brain, spleen and peripheral blood leukocytes. By lipopolysaccharide (LPS). Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family. Glucose transporter subfamily. Was initially thought to act as a glucose transporter (PubMed:10970791). However, later studies demonstrated that it does not transport glucose (PubMed:30431159). Was named GLUT9 by a report, but this gene name has already been used for SLC2A9.