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GLUT5 is a fructose transporter expressed on the apical border of enterocytes in the small intestine.[1] GLUT5 allows for fructose to be transported from the intestinal lumen into the enterocyte by facilitated diffusion due to fructose's high concentration in the intestinal lumen. GLUT5 is also expressed in skeletal muscle,[2] testis, kidney, fat tissue (adipocytes), and brain.[3]
↑Uldry M, Thorens B (February 2004). "The SLC2 family of facilitated hexose and polyol transporters". Pflügers Archiv : European Journal of Physiology. 447 (5): 480–9. doi:10.1007/s00424-003-1085-0. PMID12750891.
↑Hundal HS, Darakhshan F, Kristiansen S, Blakemore SJ, Richter EA (1998). "GLUT5 expression and fructose transport in human skeletal muscle". Advances in Experimental Medicine and Biology. 441: 35–45. doi:10.1007/978-1-4899-1928-1_4. PMID9781312.
↑Drozdowski LA, Woudstra TD, Wild GE, Clandinin MT, Thomson AB (October 2004). "Age-associated changes in intestinal fructose uptake are not explained by alterations in the abundance of GLUT5 or GLUT2". J. Nutr. Biochem. 15 (10): 630–7. doi:10.1016/j.jnutbio.2004.06.003. PMID15542355.
↑Heinrich Kasper: Ernährungsmedizin und Diätetik. 11. Auflage, Elsevier, Urban&Fischer-Verlag, 2009, ISBN9783437420122, S. 208