Identification of acceptor proteins and their modification sites of polyADP-ribosylation and biological function

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One of the biological functions of polyADP-ribosylation has been known to be involved in DNA base excision repair. However the other functions are still not known yet. To clarify the functions through identifying the in vivo acceptor proteins of polyADP-ribosylation that is mostly unknown, we used Drosophila melanogaster mutant that had deleted poly(ADP-ribose) degradation enzyme gene, (poly(ADP-ribose) glycohydrolase gene. This mutant Drosophila could eclose under elevated temperature and shows neurological disease. Thus this might serve as a model for human neurological diseases. Using affinity column of immobilized antibody against poly(ADP-ribose), alkaline treatment, 2D gel electrophoresis and mass spectroscopy, we identified alcohol dehydrogenase and several other proteins as candidates of polyADP-ribosylation in vivo.