Promoter region of the murine fibroblast growth factor receptor 2 (bek/KGFR) gene (original) (raw)

Oncogene

Abstract

Fibroblast growth factors (FGFs) and their receptors play an important role in cell growth, angiogenesis and embryonal development. Four distinct genes encoding fibroblast growth factor receptors (FGFRs) were identified: flg, encoding FGFR1, bek encoding FGFR2, and the genes for FGFR3 and FGFR4. Both FGFR2 and keratinocyte growth factor receptor (KGFR) are encoded by the same gene, bek. To study the regulation of expression of the FGF receptors we analysed the DNA sequence flanking the 5' region of the cDNA of murine FGFR2 to seek elements that control its transcription. A 5-kbp fragment containing the 5' end of the cDNA was isolated from mouse genomic library and used to map the promoter region. We found that the sequence encoding the 5' non-translated region of the FGFR2/KGFR cDNA contains an intron located 210 bp upstream from the translation start site. Using RNAase protection and primer extension, we identified the mRNA start 37 bp upstream from the beginning of the...

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