Vacuolar membrane-associated protein Iml1, N-terminal domain
Proteins in this family contain a DEP domain, which is a globular domain of about 80 residues. This entry includes vacuolar membrane-associated protein Iml1 and DEP domain-containing protein 5/DDB_G0279099. In Saccharomyces cerevisiae, Iml1 is a subu ...
Proteins in this family contain a DEP domain, which is a globular domain of about 80 residues. This entry includes vacuolar membrane-associated protein Iml1 and DEP domain-containing protein 5/DDB_G0279099. In Saccharomyces cerevisiae, Iml1 is a subunit of both the SEA (Seh1-associated) and Iml1 complexes (Iml1-Npr2-Npr3). SEA complex is associates dynamically with the vacuole and is involved in autophagy [1, 2]. Iml1 complex is required for non-nitrogen-starvation (NNS)-induced autophagy [3].
This entry represents the N-terminal double psi beta barrel domain found in IML1 proteins. The IML1 protein family is involved in the regulation of the mTORC1 signaling pathway, particularly in response to amino acid availability. Members of this fa ...
This entry represents the N-terminal double psi beta barrel domain found in IML1 proteins. The IML1 protein family is involved in the regulation of the mTORC1 signaling pathway, particularly in response to amino acid availability. Members of this family are components of the GATOR1 complex, which acts as an inhibitor of the amino acid-sensing branch of the mTORC1 pathway. When amino acids are scarce, GATOR1 increases GTP hydrolysis by Rag GTPases, converting them to their inactive GDP-bound state, thus detaching mTORC1 from the lysosomal surface and inhibiting its signaling. This action is crucial for cellular adaptation to nutrient deprivation, promoting catabolic metabolism and autophagy. Conversely, in the presence of abundant amino acids, GATOR1 is negatively regulated by GATOR2, allowing mTORC1 signaling to proceed. The IML1 family proteins interact with the nucleotide-binding pocket of Rag GTPases, coordinating their nucleotide loading states, but do not possess GAP activity themselves.
Domain found in Dishevelled, Egl-10, and Pleckstrin (DEP)
The DEP domain [1] is responsible for mediating intracellular protein targeting and regulation of protein stability in the cell [2-3]. The DEP domain is present in a number of signaling molecules, including Regulator of G protein Signaling (RGS) prot ...
The DEP domain [1] is responsible for mediating intracellular protein targeting and regulation of protein stability in the cell [2-3]. The DEP domain is present in a number of signaling molecules, including Regulator of G protein Signaling (RGS) proteins, and has been implicated in membrane targeting [4-5]. New findings in yeast, however, demonstrate a major role for a DEP domain in mediating the interaction of an RGS protein to the C-terminal tail of a GPCR, thus placing RGS in close proximity with its substrate G protein alpha subunit [6-7].
