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LAC1 protein (Saccharomyces cerevisiae) - STRING interaction network
"LAC1" - Ceramide synthase component, involved in synthesis of ceramide from C26(acyl)-coenzyme A and dihydrosphingosine or phytosphingosine, functionally equivalent to Lag1p in Saccharomyces cerevisiae
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Known Interactions
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experimentally determined
Predicted Interactions
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gene co-occurrence
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textmining
co-expression
protein homology
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LAC1Ceramide synthase component, involved in synthesis of ceramide from C26(acyl)-coenzyme A and dihydrosphingosine or phytosphingosine, functionally equivalent to Lag1p; Component of the ceramide synthase complex required for C26-CoA-dependent ceramide synthesis. Redundant with LAG1. Facilitates ER-to-Golgi transport of GPI-anchored proteins (418 aa)    
Predicted Functional Partners:
LCB3
Long-chain base-1-phosphate phosphatase with specificity for dihydrosphingosine-1-phosphate, regulates ceramide and long-chain base phosphates levels, involved in incorporation of exogenous long chain bases in sphingolipids; Dihydrosphingosine 1-phosphate phosphatase required for efficient ceramide synthesis from exogenous sphingoid bases. Involved in endocytosis and calcium-mediated signaling (409 aa)
       
  0.990
LIP1
Ceramide synthase subunit; single-span ER membrane protein associated with Lag1p and Lac1p and required for ceramide synthase activity, null mutant grows extremely slowly and is defective in ceramide synthesis; Component of the ceramide synthase complex required for synthesis of ceramides (150 aa)
       
  0.988
YPC1
Alkaline ceramidase that also has reverse (CoA-independent) ceramide synthase activity, catalyzes both breakdown and synthesis of phytoceramide; overexpression confers fumonisin B1 resistance; Hydrolyzes phytoceramide and also dihydroceramide into phytosphingosine or dihydrosphingosine. Prefers phytoceramide. Has also reverse hydrolysis activity, catalyzing synthesis of phytoceramide and dihydroceramide from palmitic acid and phytosphingosine or dihydrosphingosine. Is not responsible for the breakdown of unsaturated ceramide (316 aa)
       
  0.983
LAG1
Ceramide synthase component, involved in synthesis of ceramide from C26(acyl)-coenzyme A and dihydrosphingosine or phytosphingosine, functionally equivalent to Lac1p; Component of the ceramide synthase complex required for C26-CoA-dependent ceramide synthesis. Redundant with LAC1. Facilitates ER-to-Golgi transport of GPI-anchored proteins. Involved in the aging process. Deletion of LAG1 results in a pronounced increase (approximately 50%) in mean and in maximum life span (411 aa)
       
0.979
LCB4
Sphingoid long-chain base kinase, responsible for synthesis of long-chain base phosphates, which function as signaling molecules, regulates synthesis of ceramide from exogenous long-chain bases, localizes to the Golgi and late endosomes; Catalyzes the phosphorylation of the sphingoid long chain bases dihydrosphingosine (DHS or sphinganine) and phytosphingosine (PHS) to form dihydrosphingosine 1-phosphate (DHS-1P) and phytosphingosine 1-phosphate (PHS-1P) respectively (PubMed-9677363, PubMed-11102354, PubMed-11795842, PubMed-16141212). Involved in the biosynthesis of sphingolipids and c [...] (624 aa)
     
 
  0.976
SUR2
Sphinganine C4-hydroxylase, catalyses the conversion of sphinganine to phytosphingosine in sphingolipid biosyntheis; Required for hydroxylation of C-4 in the sphingoid moiety of ceramide. Involved in the response to syringomycin (349 aa)
     
  0.976
LCB5
Minor sphingoid long-chain base kinase, paralog of Lcb4p responsible for few percent of the total activity, possibly involved in synthesis of long-chain base phosphates, which function as signaling molecules; Catalyzes the phosphorylation of the sphingoid long chain bases dihydrosphingosine (DHS or sphinganine) and phytosphingosine (PHS) to form dihydrosphingosine 1-phosphate (DHS-1P) and phytosphingosine 1-phosphate (PHS-1P) respectively. Redundant to LCB4, is only responsible for few percent of the total activity. Involved in the biosynthesis of sphingolipids and ceramides. Involved [...] (687 aa)
     
 
  0.972
TSC10
3-ketosphinganine reductase, catalyzes the second step in phytosphingosine synthesis, essential for growth in the absence of exogenous dihydrosphingosine or phytosphingosine, member of short chain dehydrogenase/reductase protein family; Catalyzes the reduction of 3-ketodihydrosphingosine (KDS) to dihydrosphingosine (DHS) (320 aa)
         
  0.971
SCS7
Sphingolipid alpha-hydroxylase, functions in the alpha-hydroxylation of sphingolipid-associated very long chain fatty acids, has both cytochrome b5-like and hydroxylase/desaturase domains, not essential for growth; Ceramide hydroxylase involved in the alpha-hydroxylation of sphingolipid-associated very long chain fatty acids. Hydroxylates the very long chain fatty acid of ceramides at C2 and C3 (384 aa)
     
  0.969
YSR3
Dihydrosphingosine 1-phosphate phosphatase, membrane protein involved in sphingolipid metabolism; has similarity to Lcb3p; Dihydrosphingosine 1-phosphate phosphatase required for efficient ceramide synthesis from exogenous sphingoid bases. Involved in endocytosis and calcium-mediated signaling (404 aa)
         
  0.946
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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