Analysis of the mouse dhfr promoter region: existence of a divergently transcribed gene.

作者：Gray F. Crouse, E J Leys, Robert N. McEwan, Elizabeth G. Frayne, Rodney Eugene Kellems · 发表于：Molecular and Cellular Biology · 年份：1985 · DOI：10.1128/mcb.5.8.1847 · 被引用次数：53 · 研究领域：Chemical Synthesis and Analysis、RNA and protein synthesis mechanisms、Genomics and Chromatin Dynamics

The use of murine dihydrofolate reductase (dhfr) gene amplification mutants enabled us to identify important structural and functional features of the dhfr promoter region. We found another transcription unit, at least 14 kilobases in size, which initiates within 130 base pairs of the major dhfr transcript and is transcribed divergently. The 5' ends of both transcripts were analyzed and found to have multiple initiation sites. The major dhfr transcript and the divergent transcript appear to share the same promoter region; the longer transcripts of the dhfr gene overlap with the divergent transcripts and use a different promoter region. The divergent transcript appears to code for a protein; an homologous sequence to its first exon is found in the corresponding location near the human dhfr gene.