PPA-NRDE-2 protein; contains similarity to Pfam domains PF05832 (Eukaryotic protein of unknown function (DUF846)), PF08424 (NRDE-2, necessary for RNA interference); contains similarity to Interpro domains IPR008564 (Golgi apparatus membrane protein TVP23-like), IPR013633 (siRNA-mediated silencing protein NRDE-2)