Sequence Analysis Of The Transcription Control Region Upstream Of The Human Fgf-3 Gene
DNA SEQUENCE(1999)
Abstract
With the purpose of studying the transcriptional regulation of the human FGF-3 gene, we have cloned and determined the nucleotide sequence of the 11-kbp region flanking its 5' end. Analysis of the sequence disclosed the presence of multiple repetitive elements. Remarkably, all of them were found to have inserted in the same orientation as the FGF-S gene, suggesting that the whole upstream region could play a role in the control of its transcription. Unique regions within the sequence were scanned for the presence of transcriptional regulatory elements. A potential "Initiator" sequence preceded by several motifs homologous to binding sites for transcription factors pinpointed a putative promoter, 6 kbp upstream of the ATG codon for the FGF-3 protein. A 250-nt sequence stretch surrounding the "Initiator" was found to display punctate homology with the first (PU of the three promoters (P1, P2 and P3) of the mouse Fgf-3/int-2 gene, specifically in the region of the transcriptional start sites. These data should be useful in studying the mechanisms of regulation of the FGF-3 transcription unit.
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Key words
FGF-3/int-2 gene, promoter, repetitive elements, transcription factors
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