Silencing of PARP2 Blocks Autophagic Degradation

Poly(ADP-Ribose) polymerases (PARPs) are enzymes that metabolize NAD+.PARP1 and PARP10 were previously implicated in the regulation of autophagy.Here we showed that cytosolic electron-dense particles appear in the cytoplasm of C2C12 myoblasts in which PARP2 is silenced by shRNA.The cytosolic electron-dense bodies resemble autophagic vesicles and, i

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ADP-ribosylation systems in bacteria and viruses

ADP-ribosylation is an ancient posttranslational modification present in all kingdoms of life.The system likely originated in bacteria where it functions in inter- and intra-species conflict, stress response and pathogenicity.It was repeatedly adopted via lateral transfer by eukaryotes, including humans, where it has a pivotal role in epigenetics,

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