17-Hydroxysteroid Dehydrogenases/chemistry; 3-Hydroxyacyl CoA Dehydrogenases/chemistry; Alcohol Oxidoreductases/chemistry; Caenorhabditis elegans Proteins/chemistry; Carbon-Oxygen Lyases/chemistry; Drosophila Proteins/chemistry; Enoyl-CoA Hydratase/chemistry; Hydro-Lyases/chemistry; Models, Molecular; Multienzyme Complexes/chemistry; 17-Hydroxysteroid Dehydrogenases/genetics; 17-Hydroxysteroid Dehydrogenases/metabolism; 3-Hydroxyacyl CoA Dehydrogenases/genetics; 3-Hydroxyacyl CoA Dehydrogenases/metabolism; Alcohol Oxidoreductases/genetics; Alcohol Oxidoreductases/metabolism; Animals; Caenorhabditis elegans/enzymology; Caenorhabditis elegans Proteins/genetics; Caenorhabditis elegans Proteins/metabolism; Carbon-Oxygen Lyases/genetics; Carbon-Oxygen Lyases/metabolism; Carrier Proteins/chemistry; Dimerization; Drosophila Proteins/genetics; Drosophila Proteins/metabolism; Drosophila melanogaster/enzymology; Enoyl-CoA Hydratase/genetics; Enoyl-CoA Hydratase/metabolism; Humans; Hydro-Lyases/genetics; Hydro-Lyases/metabolism; Multienzyme Complexes/genetics; Multienzyme Complexes/metabolism; Peptide Fragments/chemistry; Peptide Fragments/genetics; Peptide Fragments/metabolism; Peroxisomal Multifunctional Protein-2; Peroxisomes/enzymology; Protein Structure, Tertiary; Recombinant Proteins/chemistry; Recombinant Proteins/metabolism; Scattering, Small Angle; Solubility; Species Specificity; Synchrotrons; X-Ray Diffraction