Title : Functions of Ceramide Synthase Paralogs YPR114w and YJR116w of Saccharomyces cerevisiae.

Pub. Date : 2016

PMID : 26752183






7 Functional Relationships(s)
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Protein Name
Organism
1 Ceramide is synthesized in yeast by two redundant acyl-CoA dependent synthases, Lag1 and Lac1. Ceramides sphingosine N-acyltransferase LAG1 Saccharomyces cerevisiae S288C
2 In lag1 lac1 cells, free fatty acids and sphingoid bases are elevated, and ceramides are produced through the redundant alkaline ceramidases Ypc1 and Ydc1, working backwards. Fatty Acids, Nonesterified sphingosine N-acyltransferase LAG1 Saccharomyces cerevisiae S288C
3 In lag1 lac1 cells, free fatty acids and sphingoid bases are elevated, and ceramides are produced through the redundant alkaline ceramidases Ypc1 and Ydc1, working backwards. Sphingosine sphingosine N-acyltransferase LAG1 Saccharomyces cerevisiae S288C
4 In lag1 lac1 cells, free fatty acids and sphingoid bases are elevated, and ceramides are produced through the redundant alkaline ceramidases Ypc1 and Ydc1, working backwards. Ceramides sphingosine N-acyltransferase LAG1 Saccharomyces cerevisiae S288C
5 Here we show that these residual sphingolipids are not synthesized by YPR114w or YJR116w, proteins of unknown function showing a high degree of homology to Lag1 and Lac1. Sphingolipids sphingosine N-acyltransferase LAG1 Saccharomyces cerevisiae S288C
6 Indeed, the hextuple lag1 lac1 ypc1 ydc1 ypr114w yjr116w mutant still contains ceramides and complex sphingolipids. Ceramides sphingosine N-acyltransferase LAG1 Saccharomyces cerevisiae S288C
7 Indeed, the hextuple lag1 lac1 ypc1 ydc1 ypr114w yjr116w mutant still contains ceramides and complex sphingolipids. Sphingolipids sphingosine N-acyltransferase LAG1 Saccharomyces cerevisiae S288C