BAIT

MGA2

L000004181, YIR033W
ER membrane protein involved in regulation of OLE1 transcription; inactive ER form dimerizes and one subunit is then activated by ubiquitin/proteasome-dependent processing followed by nuclear targeting; MGA2 has a paralog, SPT23, that arose from the whole genome duplication
Saccharomyces cerevisiae (S288c)
PREY

NEM1

Nem1-Spo7 phosphatase catalytic subunit NEM1, YHR004C
Probable catalytic subunit of Nem1p-Spo7p phosphatase holoenzyme; regulates nuclear growth by controlling phospholipid biosynthesis, required for normal nuclear envelope morphology and sporulation; homolog of the human protein Dullard
GO Process (2)
GO Function (1)
GO Component (3)
Saccharomyces cerevisiae (S288c)

Phenotypic Suppression

A genetic interaction is inferred when mutation or over expression of one gene results in suppression of any phenotype (other than lethality/growth defect) associated with mutation or over expression of another gene.

Publication

Mga2-mediated transcription supports mitotic nuclear expansion under lipid saturation conditions in stearoyl-CoA desaturase Ole1 mutant.

Cheng YL, Kuan JE, Wang CW, Chen RH

Membrane organelles are dynamic structures that depend on fluid membranes for their integrity and function, with the fluidity primarily derived from loosely packed unsaturated lipids. We investigated how cells respond to lipid saturation and its effect on nuclear dynamics in the budding yeast Saccharomyces cerevisiae. We found that the lipid desaturase mutant ole1-20 upregulates various genes, including OLE1, primarily through ... [more]

Mol Biol Cell Nov. 01, 2025; 36(11);ar144 [Pubmed: 41060802]

Throughput

  • Low Throughput

Ontology Terms

  • nuclear morphology (APO:0000057)

Additional Notes

  • Genetic complex
  • nem1/ ole1/ mga2 triple mutants have increased nuclear surface area and decreased nuclear sphericity compared to ole1/ mga2 double mutants

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
MGA2 NEM1
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-0.1261BioGRID
2134308
NEM1 MGA2
Phenotypic Enhancement
Phenotypic Enhancement

A genetic interaction is inferred when mutation or overexpression of one gene results in enhancement of any phenotype (other than lethality/growth defect) associated with mutation or over expression of another gene.

High-BioGRID
462006
MGA2 NEM1
Phenotypic Enhancement
Phenotypic Enhancement

A genetic interaction is inferred when mutation or overexpression of one gene results in enhancement of any phenotype (other than lethality/growth defect) associated with mutation or over expression of another gene.

High-BioGRID
462066
NEM1 MGA2
Phenotypic Suppression
Phenotypic Suppression

A genetic interaction is inferred when mutation or over expression of one gene results in suppression of any phenotype (other than lethality/growth defect) associated with mutation or over expression of another gene.

High-BioGRID
339745

Curated By

  • BioGRID