ID Q19541; PN Protein pid-1; GN pid; OS 6239; SL Nucleus Position: SL-0198; SL Comments: Cytoplasm {ECO:0000269|PubMed:24696453, ECO:0000269|PubMed:31147388, ECO:0000269|PubMed:31216475}. Nucleus {ECO:0000269|PubMed:24696453}. Cytoplasm, perinuclear region {ECO:0000269|PubMed:31147388, ECO:0000269|PubMed:31216475}. Note=Expressed predominantly in the cytoplasm (PubMed:24696453). A small fraction is nuclear or located near the nucleus (PubMed:24696453). Dispersedly distributes throughout the cytoplasm in early embryos (PubMed:31147388). Localizes to puncta in the perinuclear region in the germline syncytium (PubMed:31216475, PubMed:31147388). {ECO:0000269|PubMed:24696453, ECO:0000269|PubMed:31147388, ECO:0000269|PubMed:31216475}. DR UNIPROT: Q19541; DE Function: Component of the pid-1 variant of the PETISCO complex which is required for the biogenesis of a class of 21 nucleotide PIWI- interacting RNAs (piRNAs) that possess a uracil residue at the 5'-end (also called 21U-RNAs) (PubMed:31147388, PubMed:31216475). Within the complex acts as an adapter which binds to the complex via erh-2 (PubMed:31147388). Involved in the biogenesis of 21U-RNAs which guide the piwi protein prg-1 to its DNA targets for silencing (PubMed:24696453, PubMed:33231880). Plays a role in small RNA-directed transgenerational epigenetic inheritance (PubMed:33231880). {ECO:0000269|PubMed:24696453, ECO:0000269|PubMed:31147388, ECO:0000269|PubMed:33231880, ECO:0000305|PubMed:31216475}. DE Reference Proteome: Yes; DE Interaction: O61955; IntAct: EBI-21448974; Score: 0.46 DE Interaction: O76616; IntAct: EBI-21448974; Score: 0.56 DE Interaction: Q09293; IntAct: EBI-21448974; Score: 0.46 DE Interaction: Q22640; IntAct: EBI-21448974; Score: 0.35 DE Interaction: Q18244; IntAct: EBI-21448974; Score: 0.35 DE Interaction: Q9U2X0; IntAct: EBI-21448974; Score: 0.46 DE Interaction: O62102; IntAct: EBI-21448974; Score: 0.35 DE Interaction: Q27488; IntAct: EBI-21448974; Score: 0.46 DE Interaction: Q20057; IntAct: EBI-21448974; Score: 0.55 DE Interaction: Q21962; IntAct: EBI-21449552; Score: 0.35 DE Interaction: P91477; IntAct: EBI-21449552; Score: 0.35 GO GO:0005737; GO GO:0005634; GO GO:0048471; GO GO:0034518; GO GO:0034585; GO GO:0031047; TP Membrane Topology: Unknown; Source: UniProt - Sequence Analysis; SQ MSAKREFSHITLASTPFKKRIDQNSLKTDSDIEKDTNIAHKCAERFNYNTNLHRKVTLSDRFELAALGYEMKAKPRTIIE SQ KHNDCDEFHFIYRKEKKNDYGTGSPLSAGLSLSNPLPAGRGFLSPAIQNTSNQFTFSGSPRITPQKHTPVSANHKPARSI SQ FDDIPSNIA //