An essential component of the GATOR subcomplex GATOR2 which functions as an activator of the amino acid-sensing branch of the TORC1 signaling pathway (PubMed:27166823, PubMed:23723238). The two GATOR subcomplexes, GATOR1 and GATOR2, regulate the TORC1 pathway in order to mediate metabolic homeostasis, female gametogenesis and the response to amino acid limitation and complete starvation (PubMed:27166823, PubMed:23723238). GATOR2 activates the TORC1 signaling pathway through the inhibition of the GATOR1 subcomplex, controlling the switch to cell proliferation and growth under nutrient replete conditions and during female oocyte development (PubMed:27166823, PubMed:23723238). This GATOR2 component is required for activating TORC1 and promoting cell growth in both germline and somatic cells (PubMed:27166823, PubMed:23723238). In addition to its role in regulation of the TORC1 complex, functions independently of TORC1 to promote the acidification of lysosomes and facilitates autophagic flux (PubMed:27166823). Component of the GATOR complex consisting of mio, Nup44A/Seh1, Im11, Nplr3, Nplr2, Wdr24, Wdr59 and Sec13. Within the GATOR complex, probable component of the GATOR2 subcomplex which is likely composed of mio, Nup44A/Seh1, Wdr24, Wdr59 and Sec13 (PubMed:27166823). Interacts with Nup44A/Seh1 (PubMed:27166823). Interacts with mio (PubMed:27166823). Interacts with Nplr3 (PubMed:27166823). Localizes to lysosomes and autolysosomes under fed and starved conditions (PubMed:27166823). In female egg chambers, localizes primarily to autophagosomes and autolysosomes during amino-acid starvation (PubMed:27166823). No effect on viability. Decreased TORC1 complex activity. Decreased body size and weight. Mutant females have small ovaries, reduced egg chamber growth and exhibit a 90% reduction in eggs laid per day. Activation of autophagy and accumulation of autolysosomes independent of nutritional status. Belongs to the WD repeat WDR24 family.