Splice isoforms of transcription factor elf-1 affecting its regulatory function in transcription—molecular cloning of rat elf-1

Chiharu Nishiyama, Kyoko Takahashi, Makoto Nishiyama, Ko Okumura, Chisei Ra, Yasuyuki Ohtake, Toyokazu Yokota

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

To elucidate the role of Elf-1 in FcεRI α chain expression, rat Elf-1 cDNAs were isolated and characterized. The rat Elf-1 cDNA of 2744 bp contained an open reading frame of 1848 bp. In addition to the full length rat Elf-1 cDNA (named type 1), two splice isoforms were isolated. One of the two isoforms lacked the amino acid residues from 85th to 120th (type 2), and the other from 85th to 175th (type 3). Similar isoforms were also observed in human tissue. Overexpression of rat Elf-1 (type 1) using a transient coexpression system inhibited of the α chain promoter activity. The inhibition activity was different between the isoforms; the inhibition activity of type 2 was lower than that of type 1, and type 3 did not have an inhibitory effect. This observation suggested that each Elf-1 isoform played a different role in the gene expression under its control.

Original languageEnglish
Pages (from-to)2601-2607
Number of pages7
JournalBioscience, Biotechnology and Biochemistry
Volume64
Issue number12
DOIs
Publication statusPublished - Jun 2000

Keywords

  • Cdna
  • Elf-1
  • FcεRI
  • Splice isoform

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