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Rat skeletal muscle selenoprotein W: cDNA clone and mRNA modulation by dietary selenium.
Rat skeletal muscle selenoprotein W cDNA was isolated and sequenced. The isolation strategy involved design of degenerate PCR primers from reverse translation of a partial peptide sequence. A reverse transcription-coupled PCR product from rat muscle mRNA was used to screen a muscle cDNA library prep...
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| Main Authors: | , , , , |
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| Formato: | Artigo |
| Idioma: | en |
| Publicado em: |
1995
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC41044/ https://ncbi.nlm.nih.gov/pubmed/7568010 |
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| Resumo: | Rat skeletal muscle selenoprotein W cDNA was isolated and sequenced. The isolation strategy involved design of degenerate PCR primers from reverse translation of a partial peptide sequence. A reverse transcription-coupled PCR product from rat muscle mRNA was used to screen a muscle cDNA library prepared from selenium-supplemented rats. The cDNA sequence confirmed the known protein primary sequence, including a selenocysteine residue encoded by TGA, and identified residues needed to complete the protein sequence. RNA folding algorithms predict a stem-loop structure in the 3' untranslated region of the selenoprotein W mRNA that resembles selenocysteine insertion sequence (SE-CIS) elements identified in other selenocysteine coding cDNAs. Dietary regulation of selenoprotein W mRNA was examined in rat muscle. Dietary selenium at 0.1 ppm as selenite increased muscle mRNA 4-fold relative to a selenium-deficient diet. Higher dietary selenium produced no further increase in mRNA levels. |
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