期刊
NUCLEIC ACIDS RESEARCH
卷 42, 期 20, 页码 12779-12788出版社
OXFORD UNIV PRESS
DOI: 10.1093/nar/gku951
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资金
- National Institutes of Health [PO1GM078195]
- Russian Foundation for Basic Research [13 04 02119A]
- Blue Sky Research Fund
TRPM7 is an essential and ubiquitous channel-kinase regulating cellular influx of Mg2+. Although TRPM7 mRNA is highly abundant, very small amount of the protein is detected in cells, suggesting post-transcriptional regulation of trpm7 gene expression. We found that TRPM7 mRNA 5'-leader contains two evolutionarily conserved upstream open reading frames that act together to drastically inhibit translation of the TRPM7 reading frame at high magnesium levels and ensure its optimal translation at low magnesium levels, when the activity of the channel-kinase is most required. The study provides the first example of magnesium channel synthesis being controlled by Mg2+ in higher eukaryotes.
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