Target of Rapamycin (TOR) Drosophila Melanogaster Recombinant Protein

Promotes cell and tissue growth, maintains tissue homeostatis and controls responses to environmental stress and aging (PubMed:11069885, PubMed:11069888, PubMed:19211682, PubMed:19225150). Regulates growth during animal development by coupling growth factor signaling to nutrient availability (PubMed:11069888). Central regulators of autophagy (PubMed:18604198, PubMed:19225150). May be involved in atg1 phosphorylation (PubMed:19225150). May also be involved, directly or indirectly, in the control of neuronal function (PubMed:15454083). Phosphorylates S6K/p70S6K, in vitro (PubMed:11069888). May regulate the activity of S6K (PubMed:11069885). Overexpression inhibits growth and reduces cell size (PubMed:14505573). Affects the timing of neuronal cell differentiation (PubMed:15454083). Hyperactivation of the signaling leads to accelerated differentiation, whereas inhibition of the signaling retards differentiation (PubMed:15454083). Thus, in addition to controlling growth of the cell in which it resides, it can also influence growth of distant cells and organs during development via a humoral mechanism (PubMed:14505573). As part of the TORC1 complex regulates energy homeostasis and promotes certain aspects of larval growth by negatively regulating REPTOR (PubMed:25920570). REPTOR functions downstream of TORC1 to regulate the expression of stress response genes in response to TORC1 inhibition resulting from nutrient deprivation (PubMed:25920570). When TORC1 activity is high it phosphorylates REPTOR which inhibits its recruitment into the nucleus and antagonizes their function (PubMed:25920570). This function is essential under normal feeding conditions to promote TORC1-dependent growth during larval development and, in adults and larvae to prevent the REPTOR-dependent expression of nutrient stress response genes (PubMed:25920570). In short, during development, it primarily controls growth, whereas in the adult, where there is relatively little growth, it controls aging and other aspects of nutrient-related physiology (PubMed:11069885, PubMed:11069888, PubMed:19211682, PubMed:19225150). Rag GTPases act as activators of TORC1 in response to amino acid signals (PubMed:18604198).