Annotations: 5GV2

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth C]	ACT_7	e5gv2C4	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_7	ECOD (1.6)
A [auth C]	EUF08352	e5gv2C5	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: EUF08352	ECOD (1.6)
A [auth C]	EUF08353	e5gv2C6	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: EUF08353	ECOD (1.6)
B [auth A]	ACT_7	e5gv2A2	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_7	ECOD (1.6)
B [auth A]	EUF08352	e5gv2A4	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: EUF08352	ECOD (1.6)
B [auth A]	EUF08353	e5gv2A5	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: EUF08353	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth C]	3.30.2130.10	Alpha Beta	2-Layer Sandwich	VC0802-like	VC0802-like	CATH (utative)
B [auth A]	3.30.2130.10	Alpha Beta	2-Layer Sandwich	VC0802-like	VC0802-like	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth C], B [auth A]	PF21389	Cytosolic arginine sensor for mTORC1 subunit 1/2, ACT-like (CASTOR1_ACT-like)	Cytosolic arginine sensor for mTORC1 subunit 1/2, ACT-like	This domain is found in Cytosolic arginine sensor for mTORC1 subunit 1 from humans (CASTOR1) and in similar proteins predominantly from vertebrates. CASTOR1 functions as an intracellular arginine sensor within the amino acid-sensing branch of the TOR ...	This domain is found in Cytosolic arginine sensor for mTORC1 subunit 1 from humans (CASTOR1) and in similar proteins predominantly from vertebrates. CASTOR1 functions as an intracellular arginine sensor within the amino acid-sensing branch of the TORC1 signaling pathway. This entry represents the third out of the four tandem ACT domains present in this protein. This domain adopts the typical beta-alpha- beta-beta-alpha-beta configuration of the ACT domain, although it lacks the last beta-strand. It folds together with the first ACT domain to form an eight-stranded beta-sheet flanked by four alpha- helices on one side, making up the dimerization domain [1,4].	Domain
A [auth C], B [auth A]	PF18700	Cytosolic arginine sensor for mTORC1 subunit 1 N-terminal domain (Castor1_N)	Cytosolic arginine sensor for mTORC1 subunit 1 N-terminal domain	CASTOR1 (Cytosolic arginine sensor for mTORC1 subunit 1) has been identified as the cytosolic arginine sensor for the mTORC1 pathway. In the absence of arginine, CASTOR1 binds to GATOR2 and inhibits mTORC1 signaling; whereas in the presence of argini ...	CASTOR1 (Cytosolic arginine sensor for mTORC1 subunit 1) has been identified as the cytosolic arginine sensor for the mTORC1 pathway. In the absence of arginine, CASTOR1 binds to GATOR2 and inhibits mTORC1 signaling; whereas in the presence of arginine, CASTOR1 interacts with arginine and no longer associates with GATOR2. The arginine sits in a pocket between the N-terminal domain (NTD) and the C-terminal domain (CTD) of CASTOR1. The CASTOR1-NTD on the opposite side of the arginine-binding site was identified to mediate direct physical interaction with its downstream effector GATOR2, via GATOR2 subunit Mios [1].	Domain
A [auth C], B [auth A]	PF13840	ACT domain (ACT_7)	ACT domain	The ACT domain is a structural motif of 70-90 amino acids that functions in the control of metabolism, solute transport and signal transduction. They are thus found in a variety of different proteins in a variety of different arrangements [1]. In mam ...	The ACT domain is a structural motif of 70-90 amino acids that functions in the control of metabolism, solute transport and signal transduction. They are thus found in a variety of different proteins in a variety of different arrangements [1]. In mammalian phenylalanine hydroxylase the domain forms no contacts but promotes an allosteric effect despite the apparent lack of ligand binding [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth C], B [auth A]	GATS-like protein 3	molecular sensor activity molecular function regulator activity molecular sequestering activity protein sequestering activity cation binding organic acid binding binding ion binding anion binding amino acid binding carboxylic acid binding arginine binding small molecule binding identical protein binding molecular sensor activity molecular function regulator activity molecular sequestering activity protein sequestering activity cation binding organic acid binding binding ion binding anion binding amino acid binding carboxylic acid binding arginine binding small molecule binding identical protein binding protein binding	cellular response to stimulus positive regulation of cell communication regulation of cellular process positive regulation of signal transduction response to stimulus signaling positive regulation of biological process regulation of signal transduction positive regulation of TORC1 signaling intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction positive regulation of TOR signaling cellular response to stimulus positive regulation of cell communication regulation of cellular process positive regulation of signal transduction response to stimulus signaling positive regulation of biological process regulation of signal transduction positive regulation of TORC1 signaling intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction positive regulation of TOR signaling signal transduction regulation of TORC1 signaling positive regulation of cellular process TOR signaling regulation of biological process regulation of signaling regulation of TOR signaling biological regulation positive regulation of intracellular signal transduction regulation of response to stimulus regulation of cell communication cellular process TORC1 signaling positive regulation of signaling cellular response to acid chemical cellular response to nitrogen compound cellular response to amino acid stimulus response to L-arginine response to oxygen-containing compound response to nitrogen compound response to amino acid cellular response to oxygen-containing compound response to acid chemical cellular response to chemical stimulus response to chemical cellular response to L-arginine negative regulation of signaling negative regulation of intracellular signal transduction negative regulation of biological process negative regulation of cell communication negative regulation of TORC1 signaling negative regulation of TOR signaling negative regulation of cellular process negative regulation of response to stimulus negative regulation of signal transduction response to nutrient levels cellular response to amino acid starvation cellular response to starvation cellular response to nutrient levels cellular response to stress response to stress response to amino acid starvation response to starvation	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth C], B [auth A]	IPR040778	CASTOR1, N-terminal	Domain
A [auth C], B [auth A]	IPR045865	ACT-like domain	Homologous Superfamily
A [auth C], B [auth A]	IPR026249	CASTOR family	Family
A [auth C], B [auth A]	IPR027795	CASTOR, ACT domain	Domain
A [auth C], B [auth A]	IPR051719	Cytosolic arginine sensor for mTORC1	Family
A [auth C], B [auth A]	IPR049479	Cytosolic arginine sensor for mTORC1 subunit 1/2, ACT-like	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth C], B [auth A]	Pharos: Q8WTX7	rheumatoid arthritis Crohn disease heart disease

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.