Structure of human prostatic acid phosphatase gene.
Two cDNA clones containing the complete protein-coding sequence of 1,188 nucleotides as well as the 5' and 3' non-coding regions of human prostatic acid phosphatase (PAP) were isolated and sequenced. The size of PAP mRNAs from benign prostate hyperplasia and cancerous prostate was estimated to be 3.2Kb, indicating that the 3' downstream polyadenylation signal was used. Several genomic clones containing parts of the human PAP gene were isolated and the nucleotide sequence of ten exons and their flanking regions was determined. The protein-coding sequence of the human PAP gene was interrupted by nine introns. The positions of all nine introns present in the human PAP gene were homologous to those of the first nine introns in the human lysosomal acid phosphatase (LAP) gene. However, the last (11th) exon of the LAP gene encoding the COOH-terminal domain, which includes a transmembrane segment, was found to be absent in human PAP gene. Southern blot analysis of ten mammalian genomic DNAs gave multiple EcoRI fragments. The data of human genomic DNAs were consistent with the total length of the PAP gene of at least 50 kilobases.[1]References
- Structure of human prostatic acid phosphatase gene. Sharief, F.S., Li, S.S. Biochem. Biophys. Res. Commun. (1992) [Pubmed]
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