sugar transport pathway facilitative sugar transporter mediated sugar transport pathway GLUT mediated sugar transport pathway PW:0000576 The GLUT family contains 14 members in mammals which can be grouped into 3 classes based on sequence similarities. These transporters are characterized by the presence of 12 transmembrane alpha helices. Of the 14 members of the GLUT family, 11 have been shown to be involved in sugar transport pathway. pathway