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Genomics. 1995 Jan 20;25(2):372-80.

The L19 ribosomal protein gene (RPL19): gene organization, chromosomal mapping, and novel promoter region.

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  • 1Department of Eukaryotic Gene Organisation and Expression, Imperial Cancer Research Fund, London, United Kingdom.


The intron-containing genes encoding rat and human ribosomal protein L19 (RPL19) have been cloned. The DNA sequences of the entire rat RPL19 gene and the 5' end of the human RPL19 gene have been determined. Sequence comparison of corresponding regions of the two genes reveals a striking interspecies homology in the 5' upstream region, outside the transcribed and coding regions. The transcriptional start sites of the two genes have been determined and are identical. Both rat and human RPL19 genes have 5' ends associated with CpG islands. A promoter deletion analysis of the rat RPL19 gene suggests that this promoter may differ from those of all previously characterized ribosomal protein genes in requiring far upstream sequences for efficient gene expression. By fluorescence in situ hybridization analysis, the position of the human RPL19 gene has been sublocalized to 17q11 and may be coamplified with the erbB-2 gene in human breast cancer cells. The similarities and differences between RPL19 and other previously characterized ribosomal protein genes are discussed.

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