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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Tissue-specific in vivo transcription start sites of the human and murine cystic fibrosis genes.

The in vivo transcription start sites of the human cystic fibrosis transmembrane conductance regulator gene ( CFTR ) and its murine homologue ( Cftr ) have been mapped in a range of tissues using the technique of 5' rapid amplification of cDNA ends (5' RACE). These are the first in vivo transcription start sites for CFTR or Cftr to be reported. Distinct, tissue-specific patterns of CFTR start site usage were identified in both mouse and human. In particular, striking variation in the position of the murine Cftr transcription start site was seen along the length of the intestinal tract; different start sites being utilized in ileum and in duodenum. In humans, distinct transcription start sites are utilized in adult and foetal lungs. In addition, a novel 5'-untranslated exon of murine Cftr , denoted exon -1, was identified and shown to be expressed exclusively in mouse testis. Expression of exon -1-containing Cftr transcripts was shown by mRNA in situ hybridization to be confined to the germ cells and to be regulated during spermatogenesis.[1]


  1. Tissue-specific in vivo transcription start sites of the human and murine cystic fibrosis genes. White, N.L., Higgins, C.F., Trezise, A.E. Hum. Mol. Genet. (1998) [Pubmed]
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