Oligopeptide transporter; localized to peroxisomes and affects glutathione redox homeostasis; also localizes to the plasma membrane (PM) and to the late Golgi, and has a role in maintenance of lipid asymmetry between the inner and outer leaflets of the PM; member of the OPT family, with potential orthologs in S. pombe and C. albicans; also plays a role in formation of mature vacuoles and in polarized cell growth
Saccharomyces cerevisiae (S288c)


lipoyl(octanoyl) transferase LIP2, YLR239C
Lipoyl ligase; involved in the modification of mitochondrial enzymes by the attachment of lipoic acid groups
GO Process (1)
GO Function (1)
GO Component (1)

Gene Ontology Biological Process

Gene Ontology Molecular Function

Gene Ontology Cellular Component

Saccharomyces cerevisiae (S288c)

Synthetic Lethality

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


The yeast oligopeptide transporter Opt2 is localized to peroxisomes and affects glutathione redox homeostasis.

Elbaz-Alon Y, Morgan B, Clancy A, Amoako TN, Zalckvar E, Dick TP, Schwappach B, Schuldiner M

Glutathione, the most abundant small-molecule thiol in eukaryotic cells, is synthesized de novo solely in the cytosol and must subsequently be transported to other cellular compartments. The mechanisms of glutathione transport into and out of organelles remain largely unclear. We show that budding yeast Opt2, a close homolog of the plasma membrane glutathione transporter Opt1, localizes to peroxisomes. We demonstrate ... [more]

FEMS Yeast Res. Nov. 01, 2014; 14(7);1055-67 [Pubmed: 25130273]


  • High Throughput

Ontology Terms

  • phenotype: inviable (APO:0000112)

Additional Notes

  • SGA with opt2 as bait
  • Table 2

Curated By

  • BioGRID