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GEP4 protein (Saccharomyces cerevisiae) - STRING interaction network
"GEP4" - Mitochondrial phosphatidylglycerophosphatase (PGP phosphatase), dephosphorylates phosphatidylglycerolphosphate to generate phosphatidylglycerol, an essential step during cardiolipin biosynthesis in Saccharomyces cerevisiae
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Predicted Interactions
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GEP4Mitochondrial phosphatidylglycerophosphatase (PGP phosphatase), dephosphorylates phosphatidylglycerolphosphate to generate phosphatidylglycerol, an essential step during cardiolipin biosynthesis; null mutant is sensitive to tunicamycin, DTT; Phosphatidylglycerophosphatase involved in the biosynthesis of cardiolipin (CL), a unique dimeric phosphoglycerolipid predominantly present in mitochondrial membranes and which has important functions for cellular energy metabolism, mitochondrial dynamics and the initiation of apoptotic pathways. Required for the stability of respiratory chain supe [...] (185 aa)    
Predicted Functional Partners:
CRD1
Cardiolipin synthase; produces cardiolipin, which is a phospholipid of the mitochondrial inner membrane that is required for normal mitochondrial membrane potential and function; also required for normal vacuolar ion homeostasis; Catalyzes the synthesis of cardiolipin (CL) (diphosphatidylglycerol) by specifically transferring a phosphatidyl group from CDP-diacylglycerol to phosphatidylglycerol (PG). CL is a key phospholipid in mitochondrial membranes and plays important roles in maintaining the functional integrity and dynamics of mitochondria under both optimal and stress conditions (283 aa)
         
  0.968
PGS1
Phosphatidylglycerolphosphate synthase, catalyzes the synthesis of phosphatidylglycerolphosphate from CDP-diacylglycerol and sn-glycerol 3-phosphate in the first committed and rate-limiting step of cardiolipin biosynthesis; Essential for the viability of mitochondrial petite mutant. Catalyzes the committed step to the synthesis of the acidic phospholipids (521 aa)
       
  0.947
ALE1
Broad-specificity lysophospholipid acyltransferase, part of MBOAT family of membrane-bound O-acyltransferases; key component of Lands cycle; may have role in fatty acid exchange at sn-2 position of mature glycerophospholipids; Membrane-bound O-acyltransferase that mediates the incorporation of unsaturated acyl chains into the sn-2 position of phospholipids. Preferentially acylates lysophosphocholine, but also lysophosphoethanolamine and lysophosphatidylglycerol (619 aa)
         
  0.925
PGC1
Phosphatidyl Glycerol phospholipase C; regulates the phosphatidylglycerol (PG) content via a phospholipase C-type degradation mechanism; contains glycerophosphodiester phosphodiesterase motifs; Phosphatidylglycerol phospholipase required for the removal of excess phosphatidylglycerol (PG) via a phospholipase C- type degradation mechanism (321 aa)
       
  0.919
TAM41
Mitochondrial protein involved in protein import into the mitochondrial matrix; maintains the functional integrity of the TIM23 protein translocator complex; viability of null mutant is strain-dependent; mRNA is targeted to the bud; Catalyzes the formation of CDP-diacylglycerol (CDP-DAG) from phosphatidic acid (PA) in the mitochondrial inner membrane. Required for the biosynthesis of the dimeric phospholipid cardiolipin, which stabilizes supercomplexes of the mitochondrial respiratory chain in the mitochondrial inner membrane (385 aa)
       
 
  0.744
MDM35
Mitochondrial intermembrane space protein; mutation affects mitochondrial distribution and morphology; contains twin cysteine-x9-cysteine motifs; Involved in mitochondrial distribution and morphology. Mediates the import of UPS1, UPS2 and UPS3, 3 atypical mitochondrial intermembrane space (IMS) proteins lacking the two major IMS-targeting signals, into the intermembrane space. The UPS1-MDM35 complex mediates the transfer of phosphatidic acid (PA) between liposomes and probably functions as a PA transporter across the mitochondrion intermembrane space (PubMed-26071602, PubMed-26071601, [...] (86 aa)
       
 
  0.730
UPS1
Mitochondrial intermembrane space protein that regulates mitochondrial cardiolipin levels, null has defects in Mgm1p processing, integrity of mitochondrial inner membrane complexes, and mitochondrial morphology; ortholog of human PRELI; Required for maintenance of normal mitochondrial morphology (PubMed-16754953, PubMed-26071601). Required for PCP1- dependent processing of MGM1 (PubMed-16754953). The UPS1-MDM35 complex mediates the transfer of phosphatidic acid (PA) between liposomes and probably functions as a PA transporter across the mitochondrion intermembrane space (PubMed-2607160 [...] (175 aa)
       
 
  0.701
UPS2
Mitochondrial intermembrane space protein involved in regulation of mitochondrial cardiolipin and phosphatidylethanolamine levels; null has defects in mitochondrial morphology; similar to Ups1p, Ups3p and to human PRELI; Required for mitochondrial cristae morphogenesis and MGM1-processing. Controls the stability of mitochondrial phosphatidylethanolamine (PE). With UPS1, controls the level of cardiolipin in mitochondria. Cardiolipin is a unique phospholipid with four fatty acid chains and is present mainly in the mitochondrial inner membrane where it stabilizes the electron transport ch [...] (230 aa)
           
  0.697
IMD2
Inosine monophosphate dehydrogenase, catalyzes the rate-limiting step in GTP biosynthesis, expression is induced by mycophenolic acid resulting in resistance to the drug, expression is repressed by nutrient limitatio; Catalyzes the conversion of inosine 5’-phosphate (IMP) to xanthosine 5’-phosphate (XMP), the first committed and rate- limiting step in the de novo synthesis of guanine nucleotides, and therefore plays an important role in the regulation of cell growth. In contrast to the other IMPDH alleles IMD3 and IMD4, the enzymatic activity of IMD2 seems to be intrinsically drug resistant (523 aa)
       
  0.692
IMD1
Nonfunctional protein with homology to IMP dehydrogenase; probable pseudogene, located close to the telomere; is not expressed at detectable levels; YAR073W and YAR075W comprise a continuous reading frame in some strains of S. cerevisiae (403 aa)
       
  0.692
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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