Cloning and characterization of glucose transporter in teleost fish rainbow trout (Oncorhynchus mykiss).
The facilitated diffusion of monosaccharides across the plasma membrane is mediated by glucose transporters (GLUTs). In contrast to mammals, the glucose transport system of lower vertebrates remains unexplored. We detected glucose transport activity in rainbow trout embryos. Two GLUTs sharing 83% amino acid identity were cloned from juvenile fish, these have been denoted OnmyGLUT1A and OnmyGLUT1B. In adult trout OnmyGLUT1A is predominantly expressed in the heart with low expression in other tissues. An inverse terminal repeat of a Tc1-like transposable element was found in the 3'-untranslated region of OnmyGLUT1B. Phylogenetic analysis suggested that rainbow trout genes share a common ancestor with higher vertebrate GLUT1. We also found GLUT genes in several salmonid species.
Teerijoki
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H
Institute of Applied Biotechnology, University of Kuopio, P.O. Box 1627, Kuopio FIN-70211, Finland.
Krasnov
A
A
Pitkänen
T I
TI
Mölsä
H
H
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000096:biosynthesis; D019143:Evolution, Molecular; D051272:Glucose Transporter Type 1; D008969:Molecular Sequence Data; D009004:Monosaccharide Transport Proteins / Q000096:biosynthesis / Q000737:chemistry / Q000235:genetics*; D017686:Oncorhynchus mykiss / Q000196:embryology / Q000235:genetics* / Q000378:metabolism; D010802:Phylogeny; D020133:Reverse Transcriptase Polymerase Chain Reaction; D016415:Sequence Alignment
D018076:DNA, Complementary; D051272:Glucose Transporter Type 1; D009004:Monosaccharide Transport Proteins