has primary input isoprenoid isoprenoid metabolic process isoprenoid catabolic process https://github.com/geneontology/go-ontology/issues/28908 isoprenoid breakdown polyisoprenoid breakdown polyterpene catabolic process GO:0016097 isoprenoid degradation polyisoprenoid catabolism polyterpene catabolism GO:0008300 polyisoprenoid degradation polyisoprenoid catabolic process isoprenoid catabolism The chemical reactions and pathways resulting in the breakdown of an isoprenoid compound, isoprene (2-methylbuta-1,3-diene) or compounds containing or derived from linked isoprene (3-methyl-2-butenylene) residues. catabolic process lipid catabolic process