BAIT

SEC23

GTPase-activating protein SEC23, L000001846, S000028412, YPR181C
GTPase-activating protein, stimulates the GTPase activity of Sar1p; component of the Sec23p-Sec24p heterodimer of the COPII vesicle coat, involved in ER to Golgi transport; substrate of Ubp3/Bre5 complex; ubiquitylated by Ub-ligase Rsp5p; proteasome-mediated degradation of Sec23p is regulated by Cdc48p
GO Process (1)
GO Function (1)
GO Component (1)

Gene Ontology Biological Process

Gene Ontology Molecular Function

Gene Ontology Cellular Component

Saccharomyces cerevisiae (S288c)
PREY

SED4

L000001860, YCR067C
Integral ER membrane protein that stimulates Sar1p GTPase activity; involved in COPII vesicle budding through disassociation of coat proteins from membranes onto liposomes; binds Sec16p; SED4 has a paralog, SEC12, that arose from the whole genome duplication
GO Process (2)
GO Function (1)
GO Component (2)

Gene Ontology Biological Process

Gene Ontology Molecular Function

Gene Ontology Cellular Component

Saccharomyces cerevisiae (S288c)

Dosage Lethality

A genetic interaction is inferred when over expression or increased dosage of one gene causes lethality in a strain that is mutated or deleted for another gene.

Publication

Sed4p functions as a positive regulator of Sar1p probably through inhibition of the GTPase activation by Sec23p.

Saito-Nakano Y, Nakano A

BACKGROUND: Sar1p belongs to a unique subfamily of small GTPases and is essential for formation of the transport vesicles from the endoplasmic reticulum (ER) that are destined to the Golgi apparatus. To understand how the GTPase cycle of Sar1p is regulated, we screened for multicopy suppressors of sar1 ts mutants and identified SED4. RESULTS: Although deletion of sed4 alone shows ... [more]

Genes Cells Dec. 01, 2000; 5(12);1039-48 [Pubmed: 11168590]

Throughput

  • Low Throughput

Ontology Terms

  • phenotype: inviable (APO:0000112)

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
SEC23 SED4
Negative Genetic
Negative Genetic

Mutations/deletions in separate genes, each of which alone causes a minimal phenotype, but when combined in the same cell results in a more severe fitness defect or lethality under a given condition. This term is reserved for high or low throughput studies with scores.

High-0.2986BioGRID
2025406
SED4 SEC23
Synthetic Growth Defect
Synthetic Growth Defect

A genetic interaction is inferred when mutations in separate genes, each of which alone causes a minimal phenotype, result in a significant growth defect under a given condition when combined in the same cell.

Low-BioGRID
240003
SEC23 SED4
Synthetic Growth Defect
Synthetic Growth Defect

A genetic interaction is inferred when mutations in separate genes, each of which alone causes a minimal phenotype, result in a significant growth defect under a given condition when combined in the same cell.

Low-BioGRID
3304964

Curated By

  • BioGRID