Here are all the different types of models from the category metabolic:

• Alanine, aspartate and glutamate metabolism
• alpha-Linolenic acid metabolism
• Amino sugar and nucleotide sugar metabolism
• Aminoacyl-tRNA biosynthesis
• Aminobenzoate degradation
• Anthocyanin biosynthesis
• Arachidonic acid metabolism
• Arginine and proline metabolism
• Ascorbate and aldarate metabolism
• Atrazine degradation
• Benzoate degradation
• Benzoxazinoid biosynthesis
• beta-Alanine metabolism
• beta-Lactam resistance
• Betalain biosynthesis
• Biosynthesis of 12-, 14- and 16-membered macrolides
• Biosynthesis of ansamycins
• Biosynthesis of secondary metabolites
• Biosynthesis of siderophore group nonribosomal peptides
• Biosynthesis of type II polyketide backbone
• Biosynthesis of type II polyketide products
• Biosynthesis of unsaturated fatty acids
• Biotin metabolism
• Bisphenol degradation
• Brassinosteroid biosynthesis
• Butanoate metabolism
• Butirosin and neomycin biosynthesis
• C5-Branched dibasic acid metabolism
• Caffeine metabolism
• Caprolactam degradation
• Carbon fixation in photosynthetic organisms
• Carbon fixation pathways in prokaryotes
• Carotenoid biosynthesis
• Chloroalkane and chloroalkene degradation
• Chlorocyclohexane and chlorobenzene degradation
• Citrate cycle (TCA cycle)
• Clavulanic acid biosynthesis
• Cyanoamino acid metabolism
• Cysteine and methionine metabolism
• D-Alanine metabolism
• D-Arginine and D-ornithine metabolism
• D-Glutamine and D-glutamate metabolism
• Dioxin degradation
• Diterpenoid biosynthesis
• Drug metabolism - cytochrome P450
• Drug metabolism - other enzymes
• Ether lipid metabolism
• Ethylbenzene degradation
• Fatty acid biosynthesis
• Fatty acid elongation in mitochondria
• Fatty acid metabolism
• Flavone and flavonol biosynthesis
• Flavonoid biosynthesis
• Fluorobenzoate degradation
• Folate biosynthesis
• Fructose and mannose metabolism
• Galactose metabolism
• Geraniol degradation
• Glucosinolate biosynthesis
• Glutathione metabolism
• Glycerolipid metabolism
• Glycerophospholipid metabolism
• Glycine, serine and threonine metabolism
• Glycolysis / Gluconeogenesis
• Glycosaminoglycan biosynthesis - chondroitin sulfate
• Glycosaminoglycan biosynthesis - heparan sulfate
• Glycosaminoglycan biosynthesis - keratan sulfate
• Glycosaminoglycan degradation
• Glycosphingolipid biosynthesis - ganglio series
• Glycosphingolipid biosynthesis - globo series
• Glycosphingolipid biosynthesis - lacto and neolacto series
• Glycosylphosphatidylinositol(GPI)-anchor biosynthesis
• Glyoxylate and dicarboxylate metabolism
• Histidine metabolism
• Indole alkaloid biosynthesis
• Inositol phosphate metabolism
• Insect hormone biosynthesis
• Isoquinoline alkaloid biosynthesis
• Limonene and pinene degradation
• Linoleic acid metabolism
• Lipoic acid metabolism
• Lipopolysaccharide biosynthesis
• Lysine biosynthesis
• Lysine degradation
• Metabolic pathways
• Metabolism of xenobiotics by cytochrome P450
• Methane metabolism
• Microbial metabolism in diverse environments
• Monoterpenoid biosynthesis
• Mucin type O-Glycan biosynthesis
• N-Glycan biosynthesis
• Naphthalene degradation
• Nicotinate and nicotinamide metabolism
• Nitrogen metabolism
• Nitrotoluene degradation
• Nonribosomal peptide structures
• Novobiocin biosynthesis
• One carbon pool by folate
• Other glycan degradation
• Other types of O-glycan biosynthesis
• Oxidative phosphorylation
• Pantothenate and CoA biosynthesis
• Penicillin and cephalosporin biosynthesis
• Pentose and glucuronate interconversions
• Pentose phosphate pathway
• Peptidoglycan biosynthesis
• Phenylalanine metabolism
• Phenylalanine, tyrosine and tryptophan biosynthesis
• Phenylpropanoid biosynthesis
• Phosphatidylinositol signaling system
• Phosphonate and phosphinate metabolism
• Photosynthesis
• Photosynthesis - antenna proteins
• Polycyclic aromatic hydrocarbon degradation
• Polyketide sugar unit biosynthesis
• Porphyrin and chlorophyll metabolism
• Primary bile acid biosynthesis
• Propanoate metabolism
• Purine metabolism
• Pyrimidine metabolism
• Pyruvate metabolism
• Retinol metabolism
• Riboflavin metabolism
• Secondary bile acid biosynthesis
• Selenocompound metabolism
• Sesquiterpenoid biosynthesis
• Sphingolipid metabolism
• Starch and sucrose metabolism
• Steroid biosynthesis
• Steroid hormone biosynthesis
• Stilbenoid, diarylheptanoid and gingerol biosynthesis
• Streptomycin biosynthesis
• Styrene degradation
• Sulfur metabolism
• Synthesis and degradation of ketone bodies
• Taurine and hypotaurine metabolism
• Terpenoid backbone biosynthesis
• Tetracycline biosynthesis
• Thiamine metabolism
• Toluene degradation
• Tropane, piperidine and pyridine alkaloid biosynthesis
• Tryptophan metabolism
• Type I polyketide structures
• Tyrosine metabolism
• Ubiquinone and other terpenoid-quinone biosynthesis
• Valine, leucine and isoleucine biosynthesis
• Valine, leucine and isoleucine degradation
• Various types of N-glycan biosynthesis
• Vitamin B6 metabolism
• Xylene degradation
• Zeatin biosynthesis