Apolipoprotein B messenger RNA editing is developmentally regulated in pig small intestine: nucleotide comparison of apolipoprotein B editing regions in five species.
[No authors listed]
摘要
Apolipoprotein B (apo B) mRNA undergoes a posttranscriptional tissue-specific editing reaction which changes codon 2153 from glutamine (CAA) in apoB-100 mRNA to an in-frame stop codon (UAA) in apoB-48 mRNA. Small intestinal apo B mRNA was found to be predominantly (greater than 90%) unedited in fetal (40-day gestational age) piglets but greater than 95% edited in neonatal, suckling and adult animals. By contrast, both fetal, neonatal and adult pig liver contained greater than 99% unedited, apo B-100 mRNA. The nucleotide sequence spanning the edited region in apo B mRNA was found to be highly conserved. We speculate that the regulation of apo B mRNA editing may be developmentally modulated in pig small intestine.
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基因功能
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原始数据
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文献解读
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