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EPT1 protein (Saccharomyces cerevisiae) - STRING interaction network
"EPT1" - Sn-1,2-diacylglycerol ethanolamine- and cholinephosphotranferase in Saccharomyces cerevisiae
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Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
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gene co-occurrence
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textmining
co-expression
protein homology
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[Homology]
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EPT1Sn-1,2-diacylglycerol ethanolamine- and cholinephosphotranferase; not essential for viability; Catalyzes the final step in the CDP-ethanolamine route leading to phosphatidylethanolamine (PE). Can also catalyze the formation of phosphatidylcholine (PC) from CDP-choline, but does not substantially contribute to PC biosynthesis. Preferentially uses CDP-dimethylethanolamine and CDP-propanolamine as aminoalcohol substrates. Shows highest activity toward di- unsaturated diacylglycerol species as lipid substrates. The CDP- ethanolamine pathway may play a role in maintaining the proper PE spec [...] (391 aa)    
Predicted Functional Partners:
PCT1
Cholinephosphate cytidylyltransferase, also known as CTP-phosphocholine cytidylyltransferase, rate-determining enzyme of the CDP-choline pathway for phosphatidylcholine synthesis, inhibited by Sec14p, activated upon lipid-binding (424 aa)
     
 
  0.991
ECT1
Ethanolamine-phosphate cytidylyltransferase, catalyzes the second step of phosphatidylethanolamine biosynthesis; involved in the maintenance of plasma membrane; similar to mammalian CTP- phosphocholine cytidylyl-transferases; Ethanolamine-phosphate cytidylyltransferase which catalyzes the second step of phosphatidylethanolamine biosynthesis. Involved in the maintenance of plasma membrane and required for proper sporulation (323 aa)
     
 
  0.991
CPT1
Cholinephosphotransferase, required for phosphatidylcholine biosynthesis and for inositol-dependent regulation of EPT1 transcription; Catalyzes the final step in the CDP-choline route leading to phosphatidylcholin (PC). Preferentially uses CDP- monomethylethanolamine as aminoalcohol substrate. Shows highest activity toward di- and mono-unsaturated diacylglycerol species as lipid substrates. The CDP-choline pathway only contributes to net PC synthesis if exogenous choline is present. In its absence, this pathway recycles choline from PC turnover and may contribute to maintaining the pro [...] (393 aa)
     
0.988
PSD1
Phosphatidylserine decarboxylase of the mitochondrial inner membrane, converts phosphatidylserine to phosphatidylethanolamine; Catalyzes the formation of phosphatidylethanolamine (PtdEtn) from phosphatidylserine (PtdSer). Plays a central role in phospholipid metabolism and in the interorganelle trafficking of phosphatidylserine (PubMed-8227017, PubMed-8407984, PubMed-17976194, PubMed-23124206, PubMed-25829489). Phosphatidylethanolamine formed in the mitochondria is exported to other membranes to fullfill their requirements for PtdEtn (PubMed-8530379, PubMed-11294902). Required for norm [...] (500 aa)
         
  0.980
PSD2
Phosphatidylserine decarboxylase of the Golgi and vacuolar membranes, converts phosphatidylserine to phosphatidylethanolamine; Catalyzes the formation of phosphatidylethanolamine (PtdEtn) from phosphatidylserine (PtdSer). Plays a central role in phospholipid metabolism and in the interorganelle trafficking of phosphatidylserine (PubMed-7890740, PubMed-7890739, PubMed-24366873). Phosphatidylethanolamine produced by PSD2 is insufficient to completely provide the PtdEtn pool required by mitochondria under respiratory conditions (PubMed-11294902). PSD2 is also involved in the PtdSer transp [...] (1138 aa)
         
  0.972
CHO2
Phosphatidylethanolamine methyltransferase (PEMT), catalyzes the first step in the conversion of phosphatidylethanolamine to phosphatidylcholine during the methylation pathway of phosphatidylcholine biosynthesis; Catalyzes the first step in the conversion of phosphatidylethanolamine to phosphatidylcholine during the methylation pathway of phosphatidylcholine biosynthesis. Preferentially converts di-C16-1 substrates (869 aa)
         
  0.968
SPO14
Phospholipase D; catalyzes the hydrolysis of phosphatidylcholine, producing choline and phosphatidic acid; involved in Sec14p-independent secretion; required for meiosis and spore formation; differently regulated in secretion and meiosis; participat /.../transcription initiation and/or early elongation of specific genes; interacts with "foot domain" of RNA polymerase II; deletion results in abnormal CTD-Ser5 phosphorylation of RNA polymerase II at specific promoter regions; Required for meiosis and spore formation. Seems to be involved in the coordinate induction of late meiotic events [...] (1683 aa)
         
  0.964
PAH1
Mg<sup>2+</sup>-dependent phosphatidate (PA) phosphatase, catalyzes the dephosphorylation of PA to yield diacylglycerol, responsible for de novo lipid synthesis and formation of lipid droplets; homologous to mammalian lipin 1; Mg(2+)-dependent phosphatidate (PA) phosphatase which catalyzes the dephosphorylation of PA to yield diacylglycerol. Required for de novo lipid synthesis and formation of lipid droplets. Controles transcription of phospholipid biosynthetic genes and nuclear structure by regulating the amount of membrane present at the nuclear envelope. Involved in plasmid mainten [...] (862 aa)
     
 
  0.947
NTE1
Serine esterase, homolog of human neuropathy target esterase (NTE); Nte1p-mediated phosphatidylcholine turnover influences transcription factor Opi1p localization, affecting transcriptional regulation of phospholipid biosynthesis genes; Intracellular phospholipase B that catalyzes the double deacylation of phosphatidylcholine (PC) to glycerophosphocholine (GroPCho). Plays an important role in membrane lipid homeostasis. Responsible for the rapid PC turnover in response to inositol, elevated temperatures, or when choline is present in the growth medium (1679 aa)
     
 
  0.941
CHO1
Phosphatidylserine synthase, functions in phospholipid biosynthesis; catalyzes the reaction CDP-diaclyglycerol + L-serine = CMP + L-1-phosphatidylserine, transcriptionally repressed by myo-inositol and choline (276 aa)
     
 
  0.941
Your Current Organism:
Saccharomyces cerevisiae
NCBI taxonomy Id: 4932
Other names: Candida robusta, Pachytichospora, S. cerevisiae, Saccharomyces, Saccharomyces capensis, Saccharomyces cerevisiae, Saccharomyces italicus, Saccharomyces oviformis, Saccharomyces uvarum var. melibiosus, lager beer yeast, yeast
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