Go lipids is the first implementation that enables GO term enrichment analysis on lipids. Starting with a list of identified lipids (at least on the species level) as background and a list with only the (differentially) regulated lipids, each lipid is mapped to proteins involved in metabolic reactions. On this base, GO term analysis will then be performed with a statistical test. Depending on the selected domain (biological process, molecular function, cellular compartment, physical or chemical properties, or metabolic and signaling pathways), the analysis provides a sorted list of GO terms with a p-value for each term.