FUN38, SWA3, aminophospholipid-translocating P4-type ATPase DRS2, L000000526, YAL026C
Trans-golgi network aminophospholipid translocase (flippase); maintains membrane lipid asymmetry in post-Golgi secretory vesicles; contributes to clathrin-coated vesicle formation, endocytosis, protein trafficking between the Golgi and endosomal system and the cellular response to mating pheromone; autoinhibited by its C-terminal tail; localizes to the trans-Golgi network; mutations in human homolog ATP8B1 result in liver disease
Saccharomyces cerevisiae (S288c)


S000007493, YDR358W
Golgi-localized protein with homology to gamma-adaptin; interacts with and regulates Arf1p and Arf2p in a GTP-dependent manner in order to facilitate traffic through the late Golgi; GGA1 has a paralog, GGA2, that arose from the whole genome duplication
GO Process (3)
GO Function (1)
GO Component (1)
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.


P4-ATPase requirement for AP-1/clathrin function in protein transport from the trans-Golgi network and early endosomes.

Liu K, Surendhran K, Nothwehr SF, Graham TR

Drs2p is a resident type 4 P-type ATPase (P4-ATPase) and potential phospholipid translocase of the trans-Golgi network (TGN) where it has been implicated in clathrin function. However, precise protein transport pathways requiring Drs2p and how it contributes to clathrin-coated vesicle budding remain unclear. Here we show a functional codependence between Drs2p and the AP-1 clathrin adaptor in protein sorting at ... [more]

Mol. Biol. Cell Aug. 01, 2008; 19(8);3526-35 [Pubmed: 18508916]


  • Low Throughput

Ontology Terms

  • phenotype: inviable (APO:0000112)

Additional Notes

  • triple mutants are synthetic lethal

Curated By

  • BioGRID