PMID: 8985115Dec 1, 1996Paper

Identification of the active gene coding for the metastasis-associated 37LRP/p40 multifunctional protein

DNA and Cell Biology
N ClausseV Castronovo

Abstract

A 37LRP/p40 polypeptide is of major interest because it is consistently up-regulated in cancer cells in correlation with their invasive and metastatic phenotype. Furthermore, this polypeptide presents intriguing multifunctional properties because it has been characterized as the precursor of the metastasis-associated 67-kD laminin receptor (67LR) and as a cytoplasmic ribosomal-associated protein. The isolation of the 37LRP/p40 gene is a prerequisite for identifying the molecular mechanisms responsible for the constant up-regulation of the 67LR expression in cancer cells. To date, the active 37LRP/p40 gene has never been identified in any species due to the existence of multiple pseudogenes in most vertebrates genomes. In this study, we report for the first time the gene structure and potential regulatory sequences of the 37 LRP/p40 gene. The chicken genome was selected to undergo this characterization because it is the only known vertebrate that bears a single 37 LRP/p40 gene copy. The 37 LRP/p40 active gene is composed of 7 exons and 6 introns and bears features characteristic of a ribosomal protein gene. It does not bear a classical TATA box and it exhibits several transcription initiation sites as demonstrated by RNase prote...Continue Reading

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Citations

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