| Primary Identifier | IPR039397 | Type | Family |
| Short Name | RagA/B |
| description | RagA and RagB are closely related Rag GTPases (ras-related GTP-binding protein A and B) that constitute a unique subgroup of the Ras superfamily [], and are functional homologues of Saccharomyces cerevisiaeGtr1 []. They function by forming heterodimers with RagC or RagD, and similarly, Gtr1 dimerizes with Gtr2, through the carboxy-terminal segments. They play an essential role in regulating amino acid-induced target of rapamycin complex 1 (TORC1) kinase signaling [], exocytic cargo sorting at endosomes, and epigenetic control of gene expression. In response to amino acids, the Rag GTPases guide the TORC1 complex to activate the platform containing Rheb proto-oncogene by driving the relocalization of mTORC1 from discrete locations in the cytoplasm to a late endosomal and/or lysosomal compartment that is Rheb-enriched and contains Rab-7 []. |
