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Unless otherwise stated all data on this page refer to the human proteins. Gene information is provided for human (Hs), mouse (Mm) and rat (Rn).
Class I transporters are able to transport D-glucose, but not D-fructose, in the direction of the concentration gradient and may be inhibited non-selectively by phloretin and cytochalasin B. GLUT1 is the major glucose transporter in brain, placenta and erythrocytes, GLUT2 is found in the pancreas, liver and kidneys, GLUT3 is neuronal and placental, while GLUT4 is the insulin-responsive transporter found in skeletal muscle, heart and adipose tissue. GLUT14 appears to result from gene duplication of GLUT3 and is expressed in the testes .
1. Bianchi J, Rose RC. (1986) Glucose-independent transport of dehydroascorbic acid in human erythrocytes. Proc. Soc. Exp. Biol. Med., 181 (3): 333-7. [PMID:3945643]
2. Uldry M, Ibberson M, Hosokawa M, Thorens B. (2002) GLUT2 is a high affinity glucosamine transporter. FEBS Lett., 524 (1-3): 199-203. [PMID:12135767]
3. Wu X, Freeze HH. (2002) GLUT14, a duplicon of GLUT3, is specifically expressed in testis as alternative splice forms. Genomics, 80 (6): 553-7. [PMID:12504846]
Database page citation:
Class I transporters. Accessed on 13/02/2016. IUPHAR/BPS Guide to PHARMACOLOGY, http://www.guidetopharmacology.org/GRAC/FamilyDisplayForward?familyId=165.
Concise Guide to PHARMACOLOGY citation:
Alexander SPH, Kelly E, Marrion N, Peters JA, Benson HE, Faccenda E, Pawson AJ, Sharman JL, Southan C, Davies JA and CGTP Collaborators (2015) The Concise Guide to PHARMACOLOGY 2015/16: Transporters. Br J Pharmacol. 172: 6110-6202.