Novel fibroblast growth factor 2 transcripts are expressed in mouse embryos.

Abstract:

:We have discovered two new exons in the mouse fibroblast growth factor 2 (FGF-2 or bFGF) gene that can be alternatively spliced to the second coding exon of the gene. The newly identified exons 1b and 1c are located at, respectively, approximately 19 and 32 kb downstream of the canonical exon 1a. Using RT-PCR analysis, mRNAs containing exon 1c and canonical exons 2 and 3 were identified in embryonic limb, placenta, face, carcass and ocular tissues. A 3.7-kb transcript present in placenta and embryonic limb hybridizes with an exon 1c-derived probe in Northern blot analysis. Alternative splicing of exon 1c to exon 2 creates a transcript for which the predicted alternative FGF-2 (altFGF-2) polypeptide contains a novel N-terminal domain. Our data indicate that in mouse embryos multiple novel mRNA variants are transcribed from the FGF-2 locus using alternative splicing. These data suggest that proteins arising from these alternative transcripts may play a role in mouse embryogenesis.

authors

Dirks RP,Potter SJ,Griep AE

doi

10.1006/bbrc.2001.5683

subject

Has Abstract

pub_date

2001-10-05 00:00:00

pages

900-9

issue

4

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(01)95683-9

journal_volume

287

pub_type

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