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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5 Pt 1
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pubmed:dateCreated |
1998-7-1
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pubmed:abstractText |
Na(+)-myo-inositol cotransport activity generally maintains millimolar intracellular concentrations of myo-inositol and specifically promotes transepithelial myo-inositol transport in kidney, intestine, retina, and choroid plexus. Glucose-induced, tissue-specific myo-inositol depletion and impaired Na(+)-myo-inositol cotransport activity are implicated in the pathogenesis of diabetic complications, a process modeled in vitro in cultured human retinal pigment epithelium (RPE) cells. To explore this process at the molecular level, a human RPE cDNA library was screened with a canine Na(+)-dependent myo-inositol cotransporter (SMIT) cDNA. Overlapping cDNAs spanning 3569 nt were cloned. The resulting cDNA sequence contained a 2154-nt open reading frame, 97% identical to the canine SMIT amino acid sequence. Genomic clones containing SMIT exons suggested that the cDNA is derived from at least five exons. Hypertonic stress induced a time-dependent increase, initially in a 16-kb transcript and subsequently in 11.5-, 9.8-, 8.5-, 3.8-, and approximately 1.2-kb SMIT transcripts, that was ascribed to alternate exon splicing using exon-specific probes and direct cDNA sequencing. The human SMIT gene is a complex multiexon transcriptional unit that by alternate exon splicing generates multiple SMIT transcripts that accumulate differentially in response to hypertonic stress.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Carrier Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/DNA, Complementary,
http://linkedlifedata.com/resource/pubmed/chemical/Heat-Shock Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Membrane Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/RNA,
http://linkedlifedata.com/resource/pubmed/chemical/SLC5A3 protein, human,
http://linkedlifedata.com/resource/pubmed/chemical/Symporters
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pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0002-9513
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
274
|
pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
C1215-25
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:9612208-Alternative Splicing,
pubmed-meshheading:9612208-Amino Acid Sequence,
pubmed-meshheading:9612208-Animals,
pubmed-meshheading:9612208-Base Sequence,
pubmed-meshheading:9612208-Carrier Proteins,
pubmed-meshheading:9612208-Chromosome Mapping,
pubmed-meshheading:9612208-Cloning, Molecular,
pubmed-meshheading:9612208-DNA, Complementary,
pubmed-meshheading:9612208-Dogs,
pubmed-meshheading:9612208-Exons,
pubmed-meshheading:9612208-Heat-Shock Proteins,
pubmed-meshheading:9612208-Humans,
pubmed-meshheading:9612208-Membrane Proteins,
pubmed-meshheading:9612208-Molecular Sequence Data,
pubmed-meshheading:9612208-RNA,
pubmed-meshheading:9612208-Symporters,
pubmed-meshheading:9612208-Transcription, Genetic
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pubmed:year |
1998
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pubmed:articleTitle |
Human Na(+)-myo-inositol cotransporter gene: alternate splicing generates diverse transcripts.
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pubmed:affiliation |
Department of Internal Medicine, University of Michigan Medical School, Ann Arbor 48109, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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