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  • Title: Distribution of mammalian facilitative glucose transporter messenger RNA in bovine tissues.
    Author: Zhao FQ, Glimm DR, Kennelly JJ.
    Journal: Int J Biochem; 1993 Dec; 25(12):1897-903. PubMed ID: 8138027.
    Abstract:
    1. The complementary DNA for five human facilitative glucose transporters (GLUT1, GLUT2, GLUT3, GLUT4 and GLUT5) were used to determine the distribution of facilitative glucose transporter mRNA in bovine tissues by Northern blotting. Under high stringency hybridization conditions, a single 2.8 kb transcript of GLUT1 was seen in all bovine tissues examined except liver. Mammary gland had the highest abundance of GLUT1 mRNA. 2. Four GLUT2 transcripts of 6.3, 3.8, 2.2 and 1.6 kb were observed to be most abundant in liver, with lower abundance in kidney and duodenum. 3. Only a very low level of GLUT3 mRNA was detected in the mammary gland, skeletal muscle and duodenum. 4. Skeletal muscle contained the greatest abundance of GLUT4 mRNA, which was barely detectable in omental fat, kidney and mammary gland. 5. Transcripts of GLUT5 mRNA were detected in relatively high abundance in liver and kidney, and in lower abundance in the duodenum and mammary gland. 6. With the exception of the mammary gland, for which human data have not been reported, the distributions of GLUT1, 2 and 4 mRNA for the bovine tissues examined are similar to that reported for humans. On the other hand, the distributions of GLUT3 and 5 mRNA in the bovine differ from those reported for humans.
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