RRC ID 74688
Author Nguyen TTM, Munkhzul C, Kim J, Kyoung Y, Vianney M, Shin S, Ju S, Pham-Bui HA, Kim J, Kim JS, Lee M.
Title In vivo profiling of the Zucchini proximal proteome in the Drosophila ovary.
Journal Development
Abstract PIWI-interacting RNAs (piRNAs) are small RNAs that play a conserved role in genome defense. The piRNA processing pathway is dependent on the sequestration of RNA precursors and protein factors in specific subcellular compartments. Therefore, a highly resolved spatial proteomics approach can help identify the local interactions and elucidate the unknown aspects of piRNA biogenesis. Herein, we performed TurboID proximity labeling to investigate the interactome of Zucchini (Zuc), a key factor of piRNA biogenesis in germline cells and somatic follicle cells of the Drosophila ovary. Quantitative mass spectrometry analysis of biotinylated proteins defined the Zuc-proximal proteome, including the well-known partners of Zuc. Many of these were enriched in the outer mitochondrial membrane (OMM), where Zuc was specifically localized. The proximal proteome of Zuc showed a distinct set of proteins compared with that of Tom20, a representative OMM protein, indicating that chaperone function-related and endomembrane system/vesicle transport proteins are previously unreported interacting partners of Zuc. The functional relevance of several candidates in piRNA biogenesis was validated by derepression of transposable elements after knockdown. Our results present potential Zuc-interacting proteins, suggesting unrecognized biological processes.
Volume 150(4)
Published 2023-2-15
DOI 10.1242/dev.201220
PII 286990
PMID 36762624
MeSH Animals DNA Transposable Elements Drosophila* / metabolism Drosophila Proteins* / genetics Drosophila Proteins* / metabolism Drosophila melanogaster / genetics Drosophila melanogaster / metabolism Female Ovary / metabolism Piwi-Interacting RNA Proteome / metabolism RNA, Small Interfering / genetics RNA, Small Interfering / metabolism
IF 5.611
Drosophila DGRC#104055