Function
Ubiquitin-like protein involved in autophagy vesicles formation (By similarity). Conjugation with atg-5 through a ubiquitin-like conjugating system involving also atg-7 as an E1-like activating enzyme and atg-10 as an E2-like conjugating enzyme, is essential for its function (By similarity). Most likely a component of an atg-5-lgg-3-atg-16 complex that promotes autophagosome formation by associating with lgg-2, but not lgg-1, at the preautophagosomal membrane (PubMed:26687600, PubMed:28758895). Probably, as part of an atg-5-lgg-3-atg-16 complex, required for lgg-1 lipidation; the complex acts as an E3-like enzyme promoting atg-3-mediated lgg-1 lipidation (Probable). Involved in the degradation of P-granules by autophagy in somatic cells (PubMed:19167332). This ensures exclusive localization of the P-granules in germ cells (PubMed:19167332). Involved in the elimination of paternal mitochondria in fertilized eggs (PubMed:22105480).