lipid metabolic process
   |__membrane lipid metabolic process
       |__sphingolipid metabolic process  67 rec.
           |__ceramide metabolic process 25 rec.
           |   |__ceramide biosynthetic process(+) 18 rec.
           |   |__ceramide catabolic process(+) 5 rec.
           |   |__ganglioside metabolic process(+)
           |   |__glycosylceramide metabolic process(+) 7 rec.
           |__glycosphingolipid metabolic process 15 rec.
           |   |__ganglioside metabolic process(+)
           |   |__globoside metabolic process(+)
           |   |__glycosphingolipid biosynthetic process(+) 12 rec.
           |   |__glycosphingolipid catabolic process(+) 3 rec.
           |   |__glycosylceramide metabolic process(+) 7 rec.
           |   |__mannosyl-inositol phosphorylceramide metabolic process(+)
           |__inositol phosphoceramide metabolic process
           |   |__mannosyl diphosphorylinositol ceramide metabolic process
           |   |__mannosyl-inositol phosphorylceramide metabolic process(+)
           |__sphinganine-1-phosphate metabolic process
           |   |__sphinganine-1-phosphate biosynthetic process
           |   |__sphinganine-1-phosphate catabolic process
           |__sphingoid metabolic process 7 rec.
           |   |__3-keto-sphinganine metabolic process 1 rec.
           |   |__phytosphingosine metabolic process(+)
           |   |__sphinganine metabolic process(+)
           |   |__sphingoid biosynthetic process(+) 6 rec.
           |   |__sphingoid catabolic process(+)
           |   |__sphingosine metabolic process(+) 6 rec.
           |__sphingolipid biosynthetic process 57 rec.
           |   |__ceramide biosynthetic process(+) 18 rec.
           |   |__ceramide phosphoethanolamine biosynthetic process 1 rec.
           |   |__glycosphingolipid biosynthetic process(+) 12 rec.
           |   |__sphinganine-1-phosphate biosynthetic process
           |   |__sphingoid biosynthetic process(+) 6 rec.
           |   |__sphingolipid biosynthesis involved in endoplasmic reticulum membrane organization
           |   |__sphingomyelin biosynthetic process 1 rec.
           |__sphingolipid catabolic process 11 rec.
           |   |__ceramide catabolic process(+) 5 rec.
           |   |__ceramide phosphoethanolamine catabolic process
           |   |__glycosphingolipid catabolic process(+) 3 rec.
           |   |__sphinganine-1-phosphate catabolic process
           |   |__sphingoid catabolic process(+)
           |   |__sphingomyelin catabolic process 4 rec.
           |__sphingomyelin metabolic process 6 rec.
               |__sphingomyelin biosynthetic process 1 rec.
               |__sphingomyelin catabolic process 4 rec.