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Biochim Biophys Acta. 1999 Feb 16;1444(2):295-8.

Expression of novel alternatively spliced isoforms of the oct-1 transcription factor.

Author information

1
The Hubert Humphrey Center for Experimental Medicine and Cancer Research, The Hebrew University-Hadassah Medical School, Jerusalem 91120, Israel.

Abstract

Analysis of the alternatively spliced isoforms of the human and mouse oct-1 genes, combined with their exon-intron structure, show a high level of evolutionary conservation between these two species. The differential expression of several oct-1 isoforms was examined by reverse transcription-polymerase chain reaction performed on the 3' region of the murine oct-1 cDNA. Variations in the relative levels and patterns of expression of the isoforms were found among different tissues. Three novel isoforms originating from the 3'-distal region of oct-1, were isolated and sequenced: Two were derived from testis, and one from myeloma cells. Splicing out of different exons as revealed in the structure of these isoforms results in reading frameshifts that presumably lead to the expression of shortened Oct-1 proteins, with distinct C-terminal tails. Altogether, six out of the eight known murine oct-1 isoforms may have distinct C-termini, implying that these multiple tails have different functional roles in cellular differentiation and physiology.

PMID:
10023087
DOI:
10.1016/s0167-4781(98)00280-2
[Indexed for MEDLINE]

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