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  • Title: Glucose transporter GLUT12-functional characterization in Xenopus laevis oocytes.
    Author: Rogers S, Chandler JD, Clarke AL, Petrou S, Best JD.
    Journal: Biochem Biophys Res Commun; 2003 Aug 29; 308(3):422-6. PubMed ID: 12914765.
    Abstract:
    We have recently identified and cloned the cDNA of a new member of the glucose transporter family that has been designated GLUT12. GLUT12 possesses the structural features critical to facilitative transport of glucose but the key to understanding the possible physiological roles of this novel protein requires analysis of functional glucose transport. In the current study, we have utilized the Xenopus laevis oocyte expression system to assay transport of the glucose analog 2-deoxy-D-glucose and characterize the glucose transport properties and hexose affinities of GLUT12. Our results demonstrate that GLUT12 facilitates transport of glucose with an apparent preferential substrate affinity for glucose over other hexoses assayed. The results are significant to understanding the potential role and importance of GLUT12 in insulin-sensitive tissues and also cells with high glucose utilization such as cancer cells.
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