DDC-4, an apoptosis-associated gene, is a secreted frizzled relative

V. Wolf, G. Ke, Arunasalam Dharmarajan, W. Bielke, L. Artuso, S. Saurer, R. Friis

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    The differential display method has been used in our laboratory as a coincidence analysis to isolate genes expressed in common in each of three different rat tissues undergoing physiological apoptosis: mammary gland, ovarian corpus luteum and ventral prostate, The most interesting of these isolates, DDC-4, shows a clear association with apoptosis, its expression being confined to these three organs, and only during their involution, Using DDC-4 as probe, we screened a rat ovarian cDNA library to obtain full-length isolates, One isolate, Y81 clone 40, gives rise to a protein of approximately 40 kDa with coupled in vitro transcription/translation. Sequencing of this clone indicates an open reading frame of 1044 nucleotides encoding a protein of 39.7 kDa with a putative signal sequence, This clone exhibits a high homology with the cysteine-rich domain, i.e. the ligand-binding domain, of the frizzled gene family originally defined as tissue polarity genes in Drosophila. The homology of Y81 clone 40 is most extensive with the newly described secreted frizzled relatives, the frzb subfamily. (C) 1997 Federation of European Biochemical Societies.
    Original languageEnglish
    Pages (from-to)385-389
    JournalFEBS Letters
    Publication statusPublished - 1997


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