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  • Title: Structure and chromosomal localization of the human prostasin (PRSS8) gene.
    Author: Yu JX, Chao L, Ward DC, Chao J.
    Journal: Genomics; 1996 Mar 15; 32(3):334-40. PubMed ID: 8838796.
    Abstract:
    Prostasin, denoted as PRSS8, is a newly identified human serine proteinase that shares high sequence identity with acrosin, plasma kallikrein, and hepsin (Yu et al., 1994, 1995). In the present study, a full-length PRSS8 gene has been isolated and characterized. A 7-kb PRSS8 gene fragment has been sequenced, including a 1.4-kb 5'-flanking region, the 4.4-kb PRSS8 gene, and a 1.2-kb 3'-flanking region. The gene consists of six exons and five introns based on comparison with its cDNA sequence. The sizes of these exons are 417, 18, 163, 272, 167, and 899 bp, while those of the introns are 243, 1763, 271, 85, and 92 bp. A number of potential regulatory elements have been revealed in the 5'-flanking region, including an AP2 site, two erythroid-specific promoter elements, and a sterol regulatory element. In addition, there are a variant GC box and a variant AP1 site in the promoter region. The transcription initiation site of the PRSS8 gene has been defined at the G residue and its adjacent A residue in a sequence CTCATGACT, which is similar to an initiator element CTCANTCT. Between the transcription initiation site and these putative regulatory elements, there is an AC-rich repetitive sequence that spans over 300 bp. Human PRSS8 is a single-copy gene and has been localized on chromosome 16p11.2 by in situ hybridization.
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