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Published Online: 25 March 2009

Characterization and Expression of the Prostatic Arginine Esterase Gene, a Canine Glandular Kallikrein

Publication: DNA and Cell Biology
Volume 10, Issue Number 1

ABSTRACT

The prostatic arginine esterase gene was isolated from a genomic library prepared with dog liver DNA in λEMBL3. The selected clone contained an insert of approximately 17 kb which included the whole coding portion of arginine esterase mRNA (5 exons plus 4 introns), 2 kb upstream from the initiation site and 12 kb downstream from the polyadenylation site. The intron–exon boundaries were identical to all known mammalian kallikrein genes. The deduced amino acid sequence indicated a high degree of identity (51–61%) with other kallikreins expressed not only in the prostate but also in the pancreas of various animal species. The 5′flanking sequences contained potential regulatory elements such as a variant TATA box (TTTAAA), a CCAAT box, a SP1 transcriptional factor binding site (GGGCGG), and two TGTCCT motifs resembling glucocorticoid response elements. Southern blot analysis with an amplified cDNA fragment of 487 bp corresponding to the 5′ portion of the mRNA and with a DNA probe from a different portion of the arginine esterase gene indicated the presence of two to three homologous genes in the canine genome while in a previous study a single band was detected using a 400-bp arginine esterase cDNA corresponding to the 3′ portion of the mRNA. These results suggest that the arginine esterase gene belongs to a small kallikrein gene family. Arginine esterase mRNA is expressed primarily in the prostate but also at an extremely low level (approximately a thousandfold less) in several other tissues including the liver, the gracilis thigh muscle, the kidney, and the pancreas.

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cover image DNA and Cell Biology
DNA and Cell Biology
Volume 10Issue Number 1JAN./FEB. 1991
Pages: 49 - 59
PubMed: 1991049

History

Published online: 25 March 2009
Published in print: JAN./FEB. 1991

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