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    Biochem J. 1998 Jul 1;333 ( Pt 1):5-9.

    The majority of human glutathione peroxidase type 5 (GPX5) transcripts are incorrectly spliced: implications for the role of GPX5 in the male reproductive tract.

    Hall L, Williams K, Perry AC, Frayne J, Jury JA.

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    Department of Biochemistry, University of Bristol, School of Medical Sciences, Bristol BS8 1TD, U.K. L.Hall@bris.ac.uk

    Abstract

    An epididymis-specific, secretory glutathione peroxidase (GPX5) has been proposed previously to play a role in protecting mammalian sperm membranes from the deleterious effects of lipid peroxidation, which, if not contained, can lead to reduced fertilizing capacity. Here we report the cDNA cloning of human GPX5 and show that the majority of transcripts contain a 118 nt frame-shifting deletion, arising, most likely, from inappropriate excision of exon 3 during processing. Antisera raised against recombinant human GPX5 cross-reacted with rat and macaque (Macaca fascicularis) epididymal proteins of the size expected for full-length, active GPX5. However, no similar reactivity could be demonstrated in any of the human samples tested.

    PMID:
    9639555
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC1219548
    Free PMC Article

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