GTR2 Gtr2p [Saccharomyces cerevisiae S288C] - Gene

Summary

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Official Symbol: GTR2
Official Full Name: Gtr2p
Primary source: SGD:S000003395
Locus tag: YGR163W
See related: AllianceGenome:SGD:S000003395; FungiDB:YGR163W; VEuPathDB:YGR163W
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Saccharomyces cerevisiae S288C (strain: S288C)
Lineage: Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces
Summary: Enables GTPase activity. Contributes to GTP binding activity. Involved in several processes, including cellular response to nitrogen starvation; positive regulation of TORC1 signaling; and protein localization to vacuolar membrane. Acts upstream of or within cellular response to oxidative stress. Located in several cellular components, including bounding membrane of organelle; chromatin; and membrane raft. Part of Gtr1-Gtr2 GTPase complex and Ragulator complex. Used to study follicular lymphoma. Human ortholog(s) of this gene implicated in renal hypomagnesemia 7, with or without dilated cardiomyopathy. Orthologous to human RRAGC (Ras related GTP binding C) and RRAGD (Ras related GTP binding D). [provided by Alliance of Genome Resources, Dec 2024]
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Genomic context

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See GTR2 in Genome Data Viewer

Location:: chromosome: VII

Exon count:: 1

Sequence:: Chromosome: VII; NC_001139.9 (827552..828577)

Chromosome VII - NC_001139.9 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:: NC_001139.9

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Interaction between Gtr2p and ribosomal Rps31p affects the incorporation of Rps31p into ribosomes of Saccharomyces cerevisiae.
Title: Interaction between Gtr2p and ribosomal Rps31p affects the incorporation of Rps31p into ribosomes of Saccharomyces cerevisiae.
Ivy1 colocalizes with Gtr1 and Gtr2, a heterodimer of small GTPases that are part of the EGO complex.
Title: Ivy1 is a negative regulator of Gtr-dependent TORC1 activation.
the early-endosome recycling route and its control though the Vam6>Gtr1/Gtr2>Ltv1 pathway plays a physiological role in regulating the abundance of amino acid transporters at the cell surface
Title: Genetic dissection of early endosomal recycling highlights a TORC1-independent role for Rag GTPases.
Amino acids stimulate TORC1 through Lst4-Lst7, a GTPase-activating protein complex for the Rag family GTPase Gtr2.
Title: Amino Acids Stimulate TORC1 through Lst4-Lst7, a GTPase-Activating Protein Complex for the Rag Family GTPase Gtr2.
Npr2-Npr3-dependent GTP hydrolysis of Gtr1 and direct binding of Gtr2 to Kog1, are involved in TORC1 inactivation and autophagic induction
Title: Reciprocal conversion of Gtr1 and Gtr2 nucleotide-binding states by Npr2-Npr3 inactivates TORC1 and induces autophagy.
Data indicate that the metabolic input acts independently of small GTPases Gtr1 and Gtr2/Rag in TOR complex 1 (TORC1) activation.
Title: Nitrogen source activates TOR (target of rapamycin) complex 1 via glutamine and independently of Gtr/Rag proteins.
Crystal structure of the Gtr1p(GTP)-Gtr2p(GDP) protein complex reveals large structural rearrangements triggered by GTP-to-GDP conversion.
Title: Crystal structure of the Gtr1p(GTP)-Gtr2p(GDP) protein complex reveals large structural rearrangements triggered by GTP-to-GDP conversion.
Data present the crystal structure of the Gtr1p-Gtr2p complex, the Rag homologs from Saccharomyces cerevisiae, at 2.8 A resolution.
Title: Crystal structure of the Gtr1p-Gtr2p complex reveals new insights into the amino acid-induced TORC1 activation.
Results describe the action of small-molecule inhibitors of exocytosis and show that Gtr2 efficiently suppresses the toxic effects of the compounds.
Title: A chemical genetic screen for modulators of exocytic transport identifies inhibitors of a transport mechanism linked to GTR2 function.
Findings indicate that the formation of heterodimers by Gtr1p differs between Gtr2p and Ego1p.
Title: Gtr1p differentially associates with Gtr2p and Ego1p.

Submit: New GeneRIF Correction See all GeneRIFs (12)

Pathways from PubChem

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Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Homology

Orthologs from OrthoDB

Gene Ontology Provided by SGD

Function	Evidence Code	Pubs
contributes_to GTP binding	IDA Inferred from Direct Assay more info	PubMed
enables GTP binding	IEA Inferred from Electronic Annotation more info
enables GTPase activity	IBA Inferred from Biological aspect of Ancestor more info
enables GTPase activity	IDA Inferred from Direct Assay more info	PubMed
enables hydrolase activity	IEA Inferred from Electronic Annotation more info

Process	Evidence Code	Pubs
involved_in cellular response to amino acid stimulus	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in cellular response to nitrogen starvation	IGI Inferred from Genetic Interaction more info	PubMed
acts_upstream_of_or_within cellular response to oxidative stress	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in cellular response to starvation	IBA Inferred from Biological aspect of Ancestor more info
involved_in microautophagy	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in negative regulation of autophagy	IBA Inferred from Biological aspect of Ancestor more info
involved_in negative regulation of autophagy	IGI Inferred from Genetic Interaction more info	PubMed
involved_in positive regulation of TORC1 signaling	IBA Inferred from Biological aspect of Ancestor more info
involved_in positive regulation of TORC1 signaling	IGI Inferred from Genetic Interaction more info	PubMed
involved_in positive regulation of TORC1 signaling	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of transcription by RNA polymerase II	IDA Inferred from Direct Assay more info	PubMed
involved_in protein localization to vacuolar membrane	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
part_of Gtr1-Gtr2 GTPase complex	IBA Inferred from Biological aspect of Ancestor more info
part_of Gtr1-Gtr2 GTPase complex	IPI Inferred from Physical Interaction more info	PubMed
part_of Ragulator complex	IDA Inferred from Direct Assay more info	PubMed
part_of Ragulator complex	IPI Inferred from Physical Interaction more info	PubMed
located_in chromatin	IDA Inferred from Direct Assay more info	PubMed
located_in cytoplasm	IDA Inferred from Direct Assay more info	PubMed
located_in fungal-type vacuole membrane	HDA more info	PubMed
is_active_in fungal-type vacuole membrane	IBA Inferred from Biological aspect of Ancestor more info
located_in fungal-type vacuole membrane	IDA Inferred from Direct Assay more info	PubMed
located_in late endosome membrane	IDA Inferred from Direct Assay more info	PubMed
located_in membrane	IEA Inferred from Electronic Annotation more info
located_in membrane raft	IDA Inferred from Direct Assay more info	PubMed
is_active_in nucleus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed
located_in vacuolar membrane	IEA Inferred from Electronic Annotation more info
located_in vacuole	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: Gtr2p

NP_011679.3

Subunit of a TORC1-stimulating GTPase and the EGO/GSE complex; subunit of Gtr1-Gtr2, a GTPase that activates TORC1 in response to amino acid stimulation; negatively regulates the GTPase cycle of Gtr1p, a Ran/TC4 homolog; subunit of EGO, a vacuolar membrane complex that regulates exit from rapamycin-induced growth arrest and esorting of Gap1p; activates transcription when chromatin bound; role in the oxidative stress response; activated by the Lst4p-Lst7p GAP complex; homolog of human RagC